diff --git a/api/backend.swagger.json b/api/backend.swagger.json
index d7c9e5a1a..2fda2cc81 100644
--- a/api/backend.swagger.json
+++ b/api/backend.swagger.json
@@ -299,7 +299,7 @@
           "items": {
             "$ref": "#/definitions/openmatchDoubleRangeFilter"
           },
-          "description": "Set of Filters indicating the filtering criteria. Selected players must\nmatch every Filter."
+          "description": "Set of Filters indicating the filtering criteria. Selected tickets must\nmatch every Filter."
         },
         "string_equals_filters": {
           "type": "array",
@@ -312,8 +312,19 @@
           "items": {
             "$ref": "#/definitions/openmatchTagPresentFilter"
           }
+        },
+        "created_before": {
+          "type": "string",
+          "format": "date-time",
+          "description": "If specified, only Tickets created before the specified time are selected."
+        },
+        "created_after": {
+          "type": "string",
+          "format": "date-time",
+          "description": "If specified, only Tickets created after the specified time are selected."
         }
-      }
+      },
+      "description": "Pool specfies a set of criteria that are used to select a subset of Tickets\nthat meet all the criteria."
     },
     "openmatchReleaseTicketsRequest": {
       "type": "object",
@@ -401,6 +412,11 @@
             "$ref": "#/definitions/protobufAny"
           },
           "description": "Customized information not inspected by Open Match, to be used by the match\nmaking function, evaluator, and components making calls to Open Match.\nOptional, depending on the requirements of the connected systems."
+        },
+        "create_time": {
+          "type": "string",
+          "format": "date-time",
+          "description": "Create time represents the time at which this Ticket was created. It is\npopulated by Open Match at the time of Ticket creation."
         }
       },
       "description": "A Ticket is a basic matchmaking entity in Open Match. A Ticket represents either an\nindividual 'Player' or a 'Group' of players. Open Match will not interpret\nwhat the Ticket represents but just treat it as a matchmaking unit with a set\nof SearchFields. Open Match stores the Ticket in state storage and enables an\nAssignment to be associated with this Ticket."
diff --git a/api/evaluator.swagger.json b/api/evaluator.swagger.json
index 21156463d..9f3288076 100644
--- a/api/evaluator.swagger.json
+++ b/api/evaluator.swagger.json
@@ -177,6 +177,11 @@
             "$ref": "#/definitions/protobufAny"
           },
           "description": "Customized information not inspected by Open Match, to be used by the match\nmaking function, evaluator, and components making calls to Open Match.\nOptional, depending on the requirements of the connected systems."
+        },
+        "create_time": {
+          "type": "string",
+          "format": "date-time",
+          "description": "Create time represents the time at which this Ticket was created. It is\npopulated by Open Match at the time of Ticket creation."
         }
       },
       "description": "A Ticket is a basic matchmaking entity in Open Match. A Ticket represents either an\nindividual 'Player' or a 'Group' of players. Open Match will not interpret\nwhat the Ticket represents but just treat it as a matchmaking unit with a set\nof SearchFields. Open Match stores the Ticket in state storage and enables an\nAssignment to be associated with this Ticket."
diff --git a/api/frontend.swagger.json b/api/frontend.swagger.json
index fea091b5e..eb01a8e34 100644
--- a/api/frontend.swagger.json
+++ b/api/frontend.swagger.json
@@ -253,6 +253,11 @@
             "$ref": "#/definitions/protobufAny"
           },
           "description": "Customized information not inspected by Open Match, to be used by the match\nmaking function, evaluator, and components making calls to Open Match.\nOptional, depending on the requirements of the connected systems."
+        },
+        "create_time": {
+          "type": "string",
+          "format": "date-time",
+          "description": "Create time represents the time at which this Ticket was created. It is\npopulated by Open Match at the time of Ticket creation."
         }
       },
       "description": "A Ticket is a basic matchmaking entity in Open Match. A Ticket represents either an\nindividual 'Player' or a 'Group' of players. Open Match will not interpret\nwhat the Ticket represents but just treat it as a matchmaking unit with a set\nof SearchFields. Open Match stores the Ticket in state storage and enables an\nAssignment to be associated with this Ticket."
diff --git a/api/matchfunction.swagger.json b/api/matchfunction.swagger.json
index 6291e1d5a..268d1f47a 100644
--- a/api/matchfunction.swagger.json
+++ b/api/matchfunction.swagger.json
@@ -165,7 +165,7 @@
           "items": {
             "$ref": "#/definitions/openmatchDoubleRangeFilter"
           },
-          "description": "Set of Filters indicating the filtering criteria. Selected players must\nmatch every Filter."
+          "description": "Set of Filters indicating the filtering criteria. Selected tickets must\nmatch every Filter."
         },
         "string_equals_filters": {
           "type": "array",
@@ -178,8 +178,19 @@
           "items": {
             "$ref": "#/definitions/openmatchTagPresentFilter"
           }
+        },
+        "created_before": {
+          "type": "string",
+          "format": "date-time",
+          "description": "If specified, only Tickets created before the specified time are selected."
+        },
+        "created_after": {
+          "type": "string",
+          "format": "date-time",
+          "description": "If specified, only Tickets created after the specified time are selected."
         }
-      }
+      },
+      "description": "Pool specfies a set of criteria that are used to select a subset of Tickets\nthat meet all the criteria."
     },
     "openmatchRunRequest": {
       "type": "object",
@@ -270,6 +281,11 @@
             "$ref": "#/definitions/protobufAny"
           },
           "description": "Customized information not inspected by Open Match, to be used by the match\nmaking function, evaluator, and components making calls to Open Match.\nOptional, depending on the requirements of the connected systems."
+        },
+        "create_time": {
+          "type": "string",
+          "format": "date-time",
+          "description": "Create time represents the time at which this Ticket was created. It is\npopulated by Open Match at the time of Ticket creation."
         }
       },
       "description": "A Ticket is a basic matchmaking entity in Open Match. A Ticket represents either an\nindividual 'Player' or a 'Group' of players. Open Match will not interpret\nwhat the Ticket represents but just treat it as a matchmaking unit with a set\nof SearchFields. Open Match stores the Ticket in state storage and enables an\nAssignment to be associated with this Ticket."
diff --git a/api/messages.proto b/api/messages.proto
index f50b36111..f17b1f82a 100644
--- a/api/messages.proto
+++ b/api/messages.proto
@@ -19,6 +19,7 @@ option csharp_namespace = "OpenMatch";
 
 import "google/rpc/status.proto";
 import "google/protobuf/any.proto";
+import "google/protobuf/timestamp.proto";
 
 // A Ticket is a basic matchmaking entity in Open Match. A Ticket represents either an
 // individual 'Player' or a 'Group' of players. Open Match will not interpret
@@ -42,6 +43,10 @@ message Ticket {
   // Optional, depending on the requirements of the connected systems.
   map<string, google.protobuf.Any> extensions = 5;
 
+  // Create time represents the time at which this Ticket was created. It is
+  // populated by Open Match at the time of Ticket creation.
+  google.protobuf.Timestamp create_time = 6;
+
   // Deprecated fields.
   reserved 2;
 }
@@ -126,11 +131,13 @@ message TagPresentFilter {
   string tag = 1;
 }
 
+// Pool specfies a set of criteria that are used to select a subset of Tickets
+// that meet all the criteria.
 message Pool {
   // A developer-chosen human-readable name for this Pool.
   string name = 1;
 
-  // Set of Filters indicating the filtering criteria. Selected players must
+  // Set of Filters indicating the filtering criteria. Selected tickets must
   // match every Filter.
   repeated DoubleRangeFilter double_range_filters = 2;
 
@@ -138,6 +145,12 @@ message Pool {
 
   repeated TagPresentFilter tag_present_filters = 5;
 
+  // If specified, only Tickets created before the specified time are selected.
+  google.protobuf.Timestamp created_before = 6;
+
+  // If specified, only Tickets created after the specified time are selected.
+  google.protobuf.Timestamp created_after = 7;
+
   // Deprecated fields.
   reserved 3;
 }
diff --git a/api/query.swagger.json b/api/query.swagger.json
index af85d3c79..46db30055 100644
--- a/api/query.swagger.json
+++ b/api/query.swagger.json
@@ -143,7 +143,7 @@
           "items": {
             "$ref": "#/definitions/openmatchDoubleRangeFilter"
           },
-          "description": "Set of Filters indicating the filtering criteria. Selected players must\nmatch every Filter."
+          "description": "Set of Filters indicating the filtering criteria. Selected tickets must\nmatch every Filter."
         },
         "string_equals_filters": {
           "type": "array",
@@ -156,8 +156,19 @@
           "items": {
             "$ref": "#/definitions/openmatchTagPresentFilter"
           }
+        },
+        "created_before": {
+          "type": "string",
+          "format": "date-time",
+          "description": "If specified, only Tickets created before the specified time are selected."
+        },
+        "created_after": {
+          "type": "string",
+          "format": "date-time",
+          "description": "If specified, only Tickets created after the specified time are selected."
         }
-      }
+      },
+      "description": "Pool specfies a set of criteria that are used to select a subset of Tickets\nthat meet all the criteria."
     },
     "openmatchQueryTicketIdsRequest": {
       "type": "object",
@@ -272,6 +283,11 @@
             "$ref": "#/definitions/protobufAny"
           },
           "description": "Customized information not inspected by Open Match, to be used by the match\nmaking function, evaluator, and components making calls to Open Match.\nOptional, depending on the requirements of the connected systems."
+        },
+        "create_time": {
+          "type": "string",
+          "format": "date-time",
+          "description": "Create time represents the time at which this Ticket was created. It is\npopulated by Open Match at the time of Ticket creation."
         }
       },
       "description": "A Ticket is a basic matchmaking entity in Open Match. A Ticket represents either an\nindividual 'Player' or a 'Group' of players. Open Match will not interpret\nwhat the Ticket represents but just treat it as a matchmaking unit with a set\nof SearchFields. Open Match stores the Ticket in state storage and enables an\nAssignment to be associated with this Ticket."
diff --git a/internal/app/frontend/frontend_service.go b/internal/app/frontend/frontend_service.go
index ca0b8dfdf..bb905b410 100644
--- a/internal/app/frontend/frontend_service.go
+++ b/internal/app/frontend/frontend_service.go
@@ -18,6 +18,7 @@ import (
 	"context"
 
 	"github.com/golang/protobuf/proto"
+	"github.com/golang/protobuf/ptypes"
 	"github.com/rs/xid"
 	"github.com/sirupsen/logrus"
 	"go.opencensus.io/trace"
@@ -59,6 +60,9 @@ func (s *frontendService) CreateTicket(ctx context.Context, req *pb.CreateTicket
 	if req.Ticket.Assignment != nil {
 		return nil, status.Errorf(codes.InvalidArgument, "tickets cannot be created with an assignment")
 	}
+	if req.Ticket.CreateTime != nil {
+		return nil, status.Errorf(codes.InvalidArgument, "tickets cannot be created with create time set")
+	}
 
 	return doCreateTicket(ctx, req, s.store)
 }
@@ -71,6 +75,7 @@ func doCreateTicket(ctx context.Context, req *pb.CreateTicketRequest, store stat
 	}
 
 	ticket.Id = xid.New().String()
+	ticket.CreateTime = ptypes.TimestampNow()
 	err := store.CreateTicket(ctx, ticket)
 	if err != nil {
 		logger.WithFields(logrus.Fields{
diff --git a/internal/app/query/query_service.go b/internal/app/query/query_service.go
index 14be90bb7..0454682e9 100644
--- a/internal/app/query/query_service.go
+++ b/internal/app/query/query_service.go
@@ -49,10 +49,15 @@ func (s *queryService) QueryTickets(req *pb.QueryTicketsRequest, responseServer
 		return status.Error(codes.InvalidArgument, ".pool is required")
 	}
 
+	pf, err := filter.NewPoolFilter(pool)
+	if err != nil {
+		return err
+	}
+
 	var results []*pb.Ticket
-	err := s.tc.request(responseServer.Context(), func(tickets map[string]*pb.Ticket) {
+	err = s.tc.request(responseServer.Context(), func(tickets map[string]*pb.Ticket) {
 		for _, ticket := range tickets {
-			if filter.InPool(ticket, pool) {
+			if pf.In(ticket) {
 				results = append(results, ticket)
 			}
 		}
@@ -86,10 +91,15 @@ func (s *queryService) QueryTicketIds(req *pb.QueryTicketIdsRequest, responseSer
 		return status.Error(codes.InvalidArgument, ".pool is required")
 	}
 
+	pf, err := filter.NewPoolFilter(pool)
+	if err != nil {
+		return err
+	}
+
 	var results []string
-	err := s.tc.request(responseServer.Context(), func(tickets map[string]*pb.Ticket) {
+	err = s.tc.request(responseServer.Context(), func(tickets map[string]*pb.Ticket) {
 		for id, ticket := range tickets {
-			if filter.InPool(ticket, pool) {
+			if pf.In(ticket) {
 				results = append(results, id)
 			}
 		}
diff --git a/internal/filter/filter.go b/internal/filter/filter.go
index cbe5bf011..8370c49d8 100644
--- a/internal/filter/filter.go
+++ b/internal/filter/filter.go
@@ -18,18 +18,90 @@
 package filter
 
 import (
+	"time"
+
+	"github.com/golang/protobuf/ptypes"
+	"github.com/sirupsen/logrus"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
 	"open-match.dev/open-match/pkg/pb"
 )
 
 var emptySearchFields = &pb.SearchFields{}
 
-// InPool returns whether the ticket meets all the criteria of the pool.
-func InPool(ticket *pb.Ticket, pool *pb.Pool) bool {
+var (
+	logger = logrus.WithFields(logrus.Fields{
+		"app":       "openmatch",
+		"component": "filter",
+	})
+)
+
+// PoolFilter contains all the filtering criteria from a Pool that the Ticket
+// needs to meet to belong to that Pool.
+type PoolFilter struct {
+	DoubleRangeFilters  []*pb.DoubleRangeFilter
+	StringEqualsFilters []*pb.StringEqualsFilter
+	TagPresentFilters   []*pb.TagPresentFilter
+	CreatedBefore       time.Time
+	CreatedAfter        time.Time
+}
+
+// NewPoolFilter validates a Pool's filtering criteria and returns a PoolFilter.
+func NewPoolFilter(pool *pb.Pool) (*PoolFilter, error) {
+	var ca, cb time.Time
+	var err error
+
+	if pool.GetCreatedBefore() != nil {
+		if cb, err = ptypes.Timestamp(pool.GetCreatedBefore()); err != nil {
+			return nil, status.Error(codes.InvalidArgument, ".invalid created_before value")
+		}
+	}
+
+	if pool.GetCreatedAfter() != nil {
+		if ca, err = ptypes.Timestamp(pool.GetCreatedAfter()); err != nil {
+			return nil, status.Error(codes.InvalidArgument, ".invalid created_after value")
+		}
+	}
+
+	return &PoolFilter{
+		DoubleRangeFilters:  pool.GetDoubleRangeFilters(),
+		StringEqualsFilters: pool.GetStringEqualsFilters(),
+		TagPresentFilters:   pool.GetTagPresentFilters(),
+		CreatedBefore:       cb,
+		CreatedAfter:        ca,
+	}, nil
+}
+
+// In returns true if the Ticket meets all the criteria for this PoolFilter.
+func (pf *PoolFilter) In(ticket *pb.Ticket) bool {
 	s := ticket.GetSearchFields()
 	if s == nil {
 		s = emptySearchFields
 	}
-	for _, f := range pool.GetDoubleRangeFilters() {
+
+	if !pf.CreatedAfter.IsZero() || !pf.CreatedBefore.IsZero() {
+		// CreateTime is only populated by Open Match and hence expected to be valid.
+		if ct, err := ptypes.Timestamp(ticket.CreateTime); err == nil {
+			if !pf.CreatedAfter.IsZero() {
+				if !ct.After(pf.CreatedAfter) {
+					return false
+				}
+			}
+
+			if !pf.CreatedBefore.IsZero() {
+				if !ct.Before(pf.CreatedBefore) {
+					return false
+				}
+			}
+		} else {
+			logger.WithFields(logrus.Fields{
+				"error": err.Error(),
+				"id":    ticket.GetId(),
+			}).Error("failed to get time from Timestamp proto")
+		}
+	}
+
+	for _, f := range pf.DoubleRangeFilters {
 		v, ok := s.DoubleArgs[f.DoubleArg]
 		if !ok {
 			return false
@@ -40,7 +112,7 @@ func InPool(ticket *pb.Ticket, pool *pb.Pool) bool {
 		}
 	}
 
-	for _, f := range pool.GetStringEqualsFilters() {
+	for _, f := range pf.StringEqualsFilters {
 		v, ok := s.StringArgs[f.StringArg]
 		if !ok {
 			return false
@@ -51,7 +123,7 @@ func InPool(ticket *pb.Ticket, pool *pb.Pool) bool {
 	}
 
 outer:
-	for _, f := range pool.GetTagPresentFilters() {
+	for _, f := range pf.TagPresentFilters {
 		for _, v := range s.Tags {
 			if v == f.Tag {
 				continue outer
diff --git a/internal/filter/filter_test.go b/internal/filter/filter_test.go
index 77a0f9b31..5a3ebf07c 100644
--- a/internal/filter/filter_test.go
+++ b/internal/filter/filter_test.go
@@ -17,14 +17,25 @@ package filter
 import (
 	"testing"
 
+	"github.com/golang/protobuf/ptypes"
+	"github.com/golang/protobuf/ptypes/timestamp"
+	"github.com/stretchr/testify/assert"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
 	"open-match.dev/open-match/internal/filter/testcases"
+	"open-match.dev/open-match/pkg/pb"
 )
 
-func TestInPool(t *testing.T) {
+func TestMeetsCriteria(t *testing.T) {
 	for _, tc := range testcases.IncludedTestCases() {
 		tc := tc
 		t.Run(tc.Name, func(t *testing.T) {
-			if !InPool(tc.Ticket, tc.Pool) {
+			pf, err := NewPoolFilter(tc.Pool)
+			if err != nil {
+				t.Error("pool should be valid")
+			}
+			tc.Ticket.CreateTime = ptypes.TimestampNow()
+			if !pf.In(tc.Ticket) {
 				t.Error("ticket should be included in the pool")
 			}
 		})
@@ -33,9 +44,49 @@ func TestInPool(t *testing.T) {
 	for _, tc := range testcases.ExcludedTestCases() {
 		tc := tc
 		t.Run(tc.Name, func(t *testing.T) {
-			if InPool(tc.Ticket, tc.Pool) {
+			pf, err := NewPoolFilter(tc.Pool)
+			if err != nil {
+				t.Error("pool should be valid")
+			}
+			tc.Ticket.CreateTime = ptypes.TimestampNow()
+			if pf.In(tc.Ticket) {
 				t.Error("ticket should be excluded from the pool")
 			}
 		})
 	}
 }
+
+func TestValidPoolFilter(t *testing.T) {
+	for _, tc := range []struct {
+		name string
+		pool *pb.Pool
+		code codes.Code
+		msg  string
+	}{
+		{
+			"invalid create before",
+			&pb.Pool{
+				CreatedBefore: &timestamp.Timestamp{Nanos: -1},
+			},
+			codes.InvalidArgument,
+			".invalid created_before value",
+		},
+		{
+			"invalid create after",
+			&pb.Pool{
+				CreatedAfter: &timestamp.Timestamp{Nanos: -1},
+			},
+			codes.InvalidArgument,
+			".invalid created_after value",
+		},
+	} {
+		tc := tc
+		t.Run(tc.name, func(t *testing.T) {
+			pf, err := NewPoolFilter(tc.pool)
+			assert.Nil(t, pf)
+			s := status.Convert(err)
+			assert.Equal(t, tc.code, s.Code())
+			assert.Equal(t, tc.msg, s.Message())
+		})
+	}
+}
diff --git a/internal/filter/testcases/testcases.go b/internal/filter/testcases/testcases.go
index 85aa603ec..4d1804117 100644
--- a/internal/filter/testcases/testcases.go
+++ b/internal/filter/testcases/testcases.go
@@ -18,7 +18,10 @@ package testcases
 import (
 	"fmt"
 	"math"
+	"time"
 
+	"github.com/golang/protobuf/ptypes"
+	tspb "github.com/golang/protobuf/ptypes/timestamp"
 	"open-match.dev/open-match/pkg/pb"
 )
 
@@ -32,6 +35,7 @@ type TestCase struct {
 // IncludedTestCases returns a list of test cases where using the given filter,
 // the ticket is included in the result.
 func IncludedTestCases() []TestCase {
+	now := time.Now()
 	return []TestCase{
 		{
 			"no filters or fields",
@@ -106,12 +110,41 @@ func IncludedTestCases() []TestCase {
 		},
 
 		multipleFilters(true, true, true),
+
+		{
+			"CreatedBefore simple positive",
+			&pb.Ticket{},
+			&pb.Pool{
+				CreatedBefore: timestamp(now.Add(time.Hour * 1)),
+			},
+		},
+		{
+			"CreatedAfter simple positive",
+			&pb.Ticket{},
+			&pb.Pool{
+				CreatedAfter: timestamp(now.Add(time.Hour * -1)),
+			},
+		},
+		{
+			"Between CreatedBefore and CreatedAfter positive",
+			&pb.Ticket{},
+			&pb.Pool{
+				CreatedBefore: timestamp(now.Add(time.Hour * 1)),
+				CreatedAfter:  timestamp(now.Add(time.Hour * -1)),
+			},
+		},
+		{
+			"No time search criteria positive",
+			&pb.Ticket{},
+			&pb.Pool{},
+		},
 	}
 }
 
 // ExcludedTestCases returns a list of test cases where using the given filter,
 // the ticket is NOT included in the result.
 func ExcludedTestCases() []TestCase {
+	now := time.Now()
 	return []TestCase{
 		{
 			"DoubleRange no SearchFields",
@@ -259,6 +292,37 @@ func ExcludedTestCases() []TestCase {
 			},
 		},
 
+		{
+			"CreatedBefore simple negative",
+			&pb.Ticket{},
+			&pb.Pool{
+				CreatedBefore: timestamp(now.Add(time.Hour * -1)),
+			},
+		},
+		{
+			"CreatedAfter simple negative",
+			&pb.Ticket{},
+			&pb.Pool{
+				CreatedAfter: timestamp(now.Add(time.Hour * 1)),
+			},
+		},
+		{
+			"Created before time range negative",
+			&pb.Ticket{},
+			&pb.Pool{
+				CreatedBefore: timestamp(now.Add(time.Hour * 2)),
+				CreatedAfter:  timestamp(now.Add(time.Hour * 1)),
+			},
+		},
+		{
+			"Created after time range negative",
+			&pb.Ticket{},
+			&pb.Pool{
+				CreatedBefore: timestamp(now.Add(time.Hour * -1)),
+				CreatedAfter:  timestamp(now.Add(time.Hour * -2)),
+			},
+		},
+
 		multipleFilters(false, true, true),
 		multipleFilters(true, false, true),
 		multipleFilters(true, true, false),
@@ -338,3 +402,12 @@ func multipleFilters(doubleRange, stringEquals, tagPresent bool) TestCase {
 		},
 	}
 }
+
+func timestamp(t time.Time) *tspb.Timestamp {
+	tsp, err := ptypes.TimestampProto(t)
+	if err != nil {
+		panic(err)
+	}
+
+	return tsp
+}
diff --git a/pkg/pb/messages.pb.go b/pkg/pb/messages.pb.go
index ed29a26f1..364cea882 100644
--- a/pkg/pb/messages.pb.go
+++ b/pkg/pb/messages.pb.go
@@ -7,6 +7,7 @@ import (
 	fmt "fmt"
 	proto "github.com/golang/protobuf/proto"
 	any "github.com/golang/protobuf/ptypes/any"
+	timestamp "github.com/golang/protobuf/ptypes/timestamp"
 	_ "google.golang.org/genproto/googleapis/rpc/status"
 	math "math"
 )
@@ -39,10 +40,13 @@ type Ticket struct {
 	// Customized information not inspected by Open Match, to be used by the match
 	// making function, evaluator, and components making calls to Open Match.
 	// Optional, depending on the requirements of the connected systems.
-	Extensions           map[string]*any.Any `protobuf:"bytes,5,rep,name=extensions,proto3" json:"extensions,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
-	XXX_NoUnkeyedLiteral struct{}            `json:"-"`
-	XXX_unrecognized     []byte              `json:"-"`
-	XXX_sizecache        int32               `json:"-"`
+	Extensions map[string]*any.Any `protobuf:"bytes,5,rep,name=extensions,proto3" json:"extensions,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
+	// Create time represents the time at which this Ticket was created. It is
+	// populated by Open Match at the time of Ticket creation.
+	CreateTime           *timestamp.Timestamp `protobuf:"bytes,6,opt,name=create_time,json=createTime,proto3" json:"create_time,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}             `json:"-"`
+	XXX_unrecognized     []byte               `json:"-"`
+	XXX_sizecache        int32                `json:"-"`
 }
 
 func (m *Ticket) Reset()         { *m = Ticket{} }
@@ -98,6 +102,13 @@ func (m *Ticket) GetExtensions() map[string]*any.Any {
 	return nil
 }
 
+func (m *Ticket) GetCreateTime() *timestamp.Timestamp {
+	if m != nil {
+		return m.CreateTime
+	}
+	return nil
+}
+
 // Search fields are the fields which Open Match is aware of, and can be used
 // when specifying filters.
 type SearchFields struct {
@@ -386,17 +397,23 @@ func (m *TagPresentFilter) GetTag() string {
 	return ""
 }
 
+// Pool specfies a set of criteria that are used to select a subset of Tickets
+// that meet all the criteria.
 type Pool struct {
 	// A developer-chosen human-readable name for this Pool.
 	Name string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
-	// Set of Filters indicating the filtering criteria. Selected players must
+	// Set of Filters indicating the filtering criteria. Selected tickets must
 	// match every Filter.
-	DoubleRangeFilters   []*DoubleRangeFilter  `protobuf:"bytes,2,rep,name=double_range_filters,json=doubleRangeFilters,proto3" json:"double_range_filters,omitempty"`
-	StringEqualsFilters  []*StringEqualsFilter `protobuf:"bytes,4,rep,name=string_equals_filters,json=stringEqualsFilters,proto3" json:"string_equals_filters,omitempty"`
-	TagPresentFilters    []*TagPresentFilter   `protobuf:"bytes,5,rep,name=tag_present_filters,json=tagPresentFilters,proto3" json:"tag_present_filters,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}              `json:"-"`
-	XXX_unrecognized     []byte                `json:"-"`
-	XXX_sizecache        int32                 `json:"-"`
+	DoubleRangeFilters  []*DoubleRangeFilter  `protobuf:"bytes,2,rep,name=double_range_filters,json=doubleRangeFilters,proto3" json:"double_range_filters,omitempty"`
+	StringEqualsFilters []*StringEqualsFilter `protobuf:"bytes,4,rep,name=string_equals_filters,json=stringEqualsFilters,proto3" json:"string_equals_filters,omitempty"`
+	TagPresentFilters   []*TagPresentFilter   `protobuf:"bytes,5,rep,name=tag_present_filters,json=tagPresentFilters,proto3" json:"tag_present_filters,omitempty"`
+	// If specified, only Tickets created before the specified time are selected.
+	CreatedBefore *timestamp.Timestamp `protobuf:"bytes,6,opt,name=created_before,json=createdBefore,proto3" json:"created_before,omitempty"`
+	// If specified, only Tickets created after the specified time are selected.
+	CreatedAfter         *timestamp.Timestamp `protobuf:"bytes,7,opt,name=created_after,json=createdAfter,proto3" json:"created_after,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}             `json:"-"`
+	XXX_unrecognized     []byte               `json:"-"`
+	XXX_sizecache        int32                `json:"-"`
 }
 
 func (m *Pool) Reset()         { *m = Pool{} }
@@ -452,6 +469,20 @@ func (m *Pool) GetTagPresentFilters() []*TagPresentFilter {
 	return nil
 }
 
+func (m *Pool) GetCreatedBefore() *timestamp.Timestamp {
+	if m != nil {
+		return m.CreatedBefore
+	}
+	return nil
+}
+
+func (m *Pool) GetCreatedAfter() *timestamp.Timestamp {
+	if m != nil {
+		return m.CreatedAfter
+	}
+	return nil
+}
+
 // A MatchProfile is Open Match's representation of a Match specification. It is
 // used to indicate the criteria for selecting players for a match. A
 // MatchProfile is the input to the API to get matches and is passed to the
@@ -621,52 +652,57 @@ func init() {
 func init() { proto.RegisterFile("api/messages.proto", fileDescriptor_cb9fb1f207fd5b8c) }
 
 var fileDescriptor_cb9fb1f207fd5b8c = []byte{
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+	0x6f, 0xc3, 0xbe, 0x72, 0x95, 0xaa, 0x64, 0xad, 0xfa, 0x51, 0x6e, 0xd2, 0x75, 0x02, 0x07, 0x2a,
+	0x68, 0xb9, 0xa2, 0x6a, 0xd7, 0xd8, 0x32, 0x4a, 0xa5, 0x5e, 0x68, 0x23, 0x7a, 0x1f, 0xfa, 0x5c,
+	0xfe, 0x92, 0x6a, 0x09, 0x1e, 0x6d, 0xfd, 0xac, 0xc2, 0x3a, 0x02, 0x7d, 0xf9, 0x02, 0x8f, 0x7d,
+	0x19, 0x3f, 0x69, 0xf3, 0x78, 0x17, 0x04, 0x76, 0xdd, 0xde, 0xa5, 0xb3, 0xd7, 0x73, 0xfb, 0x8f,
+	0x83, 0x9f, 0x27, 0xa2, 0x9e, 0x0f, 0x54, 0x41, 0x31, 0x79, 0x36, 0xdd, 0x5c, 0xa7, 0xe5, 0x6d,
+	0x32, 0x2d, 0xe7, 0xbf, 0x59, 0x83, 0x1f, 0x4a, 0x42, 0x65, 0xb1, 0xf3, 0x9e, 0x04, 0xfd, 0xf0,
+	0x9f, 0x00, 0x00, 0x00, 0xff, 0xff, 0x7f, 0x53, 0xe9, 0x37, 0xbc, 0x08, 0x00, 0x00,
 }
diff --git a/test/e2e/ticket_test.go b/test/e2e/ticket_test.go
index fa334cad7..a94251718 100644
--- a/test/e2e/ticket_test.go
+++ b/test/e2e/ticket_test.go
@@ -22,6 +22,7 @@ import (
 	"testing"
 	"time"
 
+	"github.com/golang/protobuf/ptypes"
 	"github.com/stretchr/testify/assert"
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/status"
@@ -301,6 +302,16 @@ func TestCreateTicketErrors(t *testing.T) {
 			codes.InvalidArgument,
 			"tickets cannot be created with an assignment",
 		},
+		{
+			"already has create time",
+			&pb.CreateTicketRequest{
+				Ticket: &pb.Ticket{
+					CreateTime: ptypes.TimestampNow(),
+				},
+			},
+			codes.InvalidArgument,
+			"tickets cannot be created with create time set",
+		},
 	} {
 		tt := tt
 		t.Run(tt.name, func(t *testing.T) {