diff --git a/rbproto/python/shot_pb2.py b/rbproto/python/shot_pb2.py
index f2748d1..1d6fbd2 100644
--- a/rbproto/python/shot_pb2.py
+++ b/rbproto/python/shot_pb2.py
@@ -13,7 +13,7 @@ _sym_db = _symbol_database.Default()
 
 
 
-DESCRIPTOR = _descriptor_pool.Default().AddSerializedFile(b'\n\nshot.proto\x12\x0fserialized_shot\"?\n\x03\x42ox\x12\x0c\n\x04left\x18\x01 \x01(\x02\x12\x0b\n\x03top\x18\x02 \x01(\x02\x12\r\n\x05width\x18\x03 \x01(\x02\x12\x0e\n\x06height\x18\x04 \x01(\x02\"\x1d\n\x05Point\x12\t\n\x01x\x18\x01 \x01(\x02\x12\t\n\x01y\x18\x02 \x01(\x02\"\x7f\n\rBallDetection\x12.\n\x0eplane_position\x18\x01 \x01(\x0b\x32\x16.serialized_shot.Point\x12(\n\nannotation\x18\x02 \x01(\x0b\x32\x14.serialized_shot.Box\x12\x14\n\x0cinterpolated\x18\x03 \x01(\x08\"T\n\x10RLEBallDetection\x12\x31\n\tdetection\x18\x01 \x01(\x0b\x32\x1e.serialized_shot.BallDetection\x12\r\n\x05\x63ount\x18\x02 \x01(\r\"L\n\x13RLEDetectionHistory\x12\x35\n\ndetections\x18\x01 \x03(\x0b\x32!.serialized_shot.RLEBallDetection\"F\n\x10\x44\x65tectionHistory\x12\x32\n\ndetections\x18\x01 \x03(\x0b\x32\x1e.serialized_shot.BallDetection\"\xfc\x01\n\rCollisionInfo\x12\x0e\n\x06source\x18\x01 \x01(\r\x12M\n\x10\x62\x61ll_identifiers\x18\x02 \x03(\x0b\x32\x33.serialized_shot.CollisionInfo.BallIdentifiersEntry\x12\x17\n\x0fwall_identifier\x18\x03 \x01(\r\x12\x13\n\x0b\x66rame_index\x18\x04 \x01(\r\x12\x0e\n\x06static\x18\x05 \x01(\x08\x1aN\n\x14\x42\x61llIdentifiersEntry\x12\x0b\n\x03key\x18\x01 \x01(\r\x12%\n\x05value\x18\x02 \x01(\x0b\x32\x16.serialized_shot.Point:\x02\x38\x01\"\xcc\x02\n\x04Path\x12\x13\n\x0bstart_frame\x18\x01 \x01(\r\x12\x11\n\tend_frame\x18\x02 \x01(\r\x12\x37\n\ndetections\x18\x03 \x01(\x0b\x32!.serialized_shot.DetectionHistoryH\x00\x12>\n\x0erle_detections\x18\x04 \x01(\x0b\x32$.serialized_shot.RLEDetectionHistoryH\x00\x12\x15\n\x0bnot_present\x18\x05 \x01(\x08H\x00\x12\x11\n\tis_static\x18\x06 \x01(\x08\x12\x32\n\nstart_info\x18\x07 \x01(\x0b\x32\x1e.serialized_shot.CollisionInfo\x12\x30\n\x08\x65nd_info\x18\x08 \x01(\x0b\x32\x1e.serialized_shot.CollisionInfoB\x13\n\x11\x64\x65tection_history\"R\n\x11IdentifierHistory\x12\x17\n\x0f\x62\x61ll_identifier\x18\x01 \x01(\r\x12$\n\x05paths\x18\x02 \x03(\x0b\x32\x15.serialized_shot.Path\"j\n\x12KeyBallIdentifiers\x12\x10\n\x08\x63ue_ball\x18\x01 \x01(\r\x12\x13\n\x0bobject_ball\x18\x02 \x01(\r\x12\x13\n\x0btarget_ball\x18\x03 \x01(\r\x12\x18\n\x10\x63ontact_sequence\x18\x04 \x03(\r\"\xa8\x01\n\x04Shot\x12@\n\x14identifier_histories\x18\x03 \x03(\x0b\x32\".serialized_shot.IdentifierHistory\x12\x36\n\tkey_balls\x18\x04 \x01(\x0b\x32#.serialized_shot.KeyBallIdentifiers\x12\x13\n\x0bstart_index\x18\x05 \x01(\r\x12\x11\n\tend_index\x18\x06 \x01(\rb\x06proto3')
+DESCRIPTOR = _descriptor_pool.Default().AddSerializedFile(b'\n\nshot.proto\x12\x0fserialized_shot\"?\n\x03\x42ox\x12\x0c\n\x04left\x18\x01 \x01(\x02\x12\x0b\n\x03top\x18\x02 \x01(\x02\x12\r\n\x05width\x18\x03 \x01(\x02\x12\x0e\n\x06height\x18\x04 \x01(\x02\"\x1d\n\x05Point\x12\t\n\x01x\x18\x01 \x01(\x02\x12\t\n\x01y\x18\x02 \x01(\x02\"\x7f\n\rBallDetection\x12.\n\x0eplane_position\x18\x01 \x01(\x0b\x32\x16.serialized_shot.Point\x12(\n\nannotation\x18\x02 \x01(\x0b\x32\x14.serialized_shot.Box\x12\x14\n\x0cinterpolated\x18\x03 \x01(\x08\"T\n\x10RLEBallDetection\x12\x31\n\tdetection\x18\x01 \x01(\x0b\x32\x1e.serialized_shot.BallDetection\x12\r\n\x05\x63ount\x18\x02 \x01(\r\"L\n\x13RLEDetectionHistory\x12\x35\n\ndetections\x18\x01 \x03(\x0b\x32!.serialized_shot.RLEBallDetection\"F\n\x10\x44\x65tectionHistory\x12\x32\n\ndetections\x18\x01 \x03(\x0b\x32\x1e.serialized_shot.BallDetection\"\xfc\x01\n\rCollisionInfo\x12\x0e\n\x06source\x18\x01 \x01(\r\x12M\n\x10\x62\x61ll_identifiers\x18\x02 \x03(\x0b\x32\x33.serialized_shot.CollisionInfo.BallIdentifiersEntry\x12\x17\n\x0fwall_identifier\x18\x03 \x01(\r\x12\x13\n\x0b\x66rame_index\x18\x04 \x01(\r\x12\x0e\n\x06static\x18\x05 \x01(\x08\x1aN\n\x14\x42\x61llIdentifiersEntry\x12\x0b\n\x03key\x18\x01 \x01(\r\x12%\n\x05value\x18\x02 \x01(\x0b\x32\x16.serialized_shot.Point:\x02\x38\x01\"\xcc\x02\n\x04Path\x12\x13\n\x0bstart_frame\x18\x01 \x01(\r\x12\x11\n\tend_frame\x18\x02 \x01(\r\x12\x37\n\ndetections\x18\x03 \x01(\x0b\x32!.serialized_shot.DetectionHistoryH\x00\x12>\n\x0erle_detections\x18\x04 \x01(\x0b\x32$.serialized_shot.RLEDetectionHistoryH\x00\x12\x15\n\x0bnot_present\x18\x05 \x01(\x08H\x00\x12\x11\n\tis_static\x18\x06 \x01(\x08\x12\x32\n\nstart_info\x18\x07 \x01(\x0b\x32\x1e.serialized_shot.CollisionInfo\x12\x30\n\x08\x65nd_info\x18\x08 \x01(\x0b\x32\x1e.serialized_shot.CollisionInfoB\x13\n\x11\x64\x65tection_history\"R\n\x11IdentifierHistory\x12\x17\n\x0f\x62\x61ll_identifier\x18\x01 \x01(\r\x12$\n\x05paths\x18\x02 \x03(\x0b\x32\x15.serialized_shot.Path\"\xf4\x01\n\x12KeyBallIdentifiers\x12\x10\n\x08\x63ue_ball\x18\x01 \x01(\r\x12\x13\n\x0bobject_ball\x18\x02 \x01(\r\x12\x13\n\x0btarget_ball\x18\x03 \x01(\r\x12\x18\n\x10\x63ontact_sequence\x18\x04 \x03(\r\x12\x18\n\x0b\x63ue_ball_id\x18\x05 \x01(\rH\x00\x88\x01\x01\x12\x1b\n\x0eobject_ball_id\x18\x06 \x01(\rH\x01\x88\x01\x01\x12\x1b\n\x0etarget_ball_id\x18\x07 \x01(\rH\x02\x88\x01\x01\x42\x0e\n\x0c_cue_ball_idB\x11\n\x0f_object_ball_idB\x11\n\x0f_target_ball_id\"\xa8\x01\n\x04Shot\x12@\n\x14identifier_histories\x18\x03 \x03(\x0b\x32\".serialized_shot.IdentifierHistory\x12\x36\n\tkey_balls\x18\x04 \x01(\x0b\x32#.serialized_shot.KeyBallIdentifiers\x12\x13\n\x0bstart_index\x18\x05 \x01(\r\x12\x11\n\tend_index\x18\x06 \x01(\rb\x06proto3')
 
 _globals = globals()
 _builder.BuildMessageAndEnumDescriptors(DESCRIPTOR, _globals)
@@ -42,8 +42,8 @@ if _descriptor._USE_C_DESCRIPTORS == False:
   _globals['_PATH']._serialized_end=1080
   _globals['_IDENTIFIERHISTORY']._serialized_start=1082
   _globals['_IDENTIFIERHISTORY']._serialized_end=1164
-  _globals['_KEYBALLIDENTIFIERS']._serialized_start=1166
-  _globals['_KEYBALLIDENTIFIERS']._serialized_end=1272
-  _globals['_SHOT']._serialized_start=1275
-  _globals['_SHOT']._serialized_end=1443
+  _globals['_KEYBALLIDENTIFIERS']._serialized_start=1167
+  _globals['_KEYBALLIDENTIFIERS']._serialized_end=1411
+  _globals['_SHOT']._serialized_start=1414
+  _globals['_SHOT']._serialized_end=1582
 # @@protoc_insertion_point(module_scope)
diff --git a/rbproto/python/shot_pb2.pyi b/rbproto/python/shot_pb2.pyi
index 3d2d205..b2a4f31 100644
--- a/rbproto/python/shot_pb2.pyi
+++ b/rbproto/python/shot_pb2.pyi
@@ -105,16 +105,22 @@ class IdentifierHistory(_message.Message):
     def __init__(self, ball_identifier: _Optional[int] = ..., paths: _Optional[_Iterable[_Union[Path, _Mapping]]] = ...) -> None: ...
 
 class KeyBallIdentifiers(_message.Message):
-    __slots__ = ["cue_ball", "object_ball", "target_ball", "contact_sequence"]
+    __slots__ = ["cue_ball", "object_ball", "target_ball", "contact_sequence", "cue_ball_id", "object_ball_id", "target_ball_id"]
     CUE_BALL_FIELD_NUMBER: _ClassVar[int]
     OBJECT_BALL_FIELD_NUMBER: _ClassVar[int]
     TARGET_BALL_FIELD_NUMBER: _ClassVar[int]
     CONTACT_SEQUENCE_FIELD_NUMBER: _ClassVar[int]
+    CUE_BALL_ID_FIELD_NUMBER: _ClassVar[int]
+    OBJECT_BALL_ID_FIELD_NUMBER: _ClassVar[int]
+    TARGET_BALL_ID_FIELD_NUMBER: _ClassVar[int]
     cue_ball: int
     object_ball: int
     target_ball: int
     contact_sequence: _containers.RepeatedScalarFieldContainer[int]
-    def __init__(self, cue_ball: _Optional[int] = ..., object_ball: _Optional[int] = ..., target_ball: _Optional[int] = ..., contact_sequence: _Optional[_Iterable[int]] = ...) -> None: ...
+    cue_ball_id: int
+    object_ball_id: int
+    target_ball_id: int
+    def __init__(self, cue_ball: _Optional[int] = ..., object_ball: _Optional[int] = ..., target_ball: _Optional[int] = ..., contact_sequence: _Optional[_Iterable[int]] = ..., cue_ball_id: _Optional[int] = ..., object_ball_id: _Optional[int] = ..., target_ball_id: _Optional[int] = ...) -> None: ...
 
 class Shot(_message.Message):
     __slots__ = ["identifier_histories", "key_balls", "start_index", "end_index"]
diff --git a/rbproto/shot.proto b/rbproto/shot.proto
index 5a169c6..a4746c0 100644
--- a/rbproto/shot.proto
+++ b/rbproto/shot.proto
@@ -63,6 +63,10 @@ message KeyBallIdentifiers {
   // Long term this will potentially represent a linked list
   // of all balls in a shot.
   repeated uint32 contact_sequence = 4;
+
+  optional uint32 cue_ball_id = 5;
+  optional uint32 object_ball_id = 6;
+  optional uint32 target_ball_id = 7;
 }
 
 message Shot {
diff --git a/rbproto/ts/shot.ts b/rbproto/ts/shot.ts
index 95eee51..de70d5f 100644
--- a/rbproto/ts/shot.ts
+++ b/rbproto/ts/shot.ts
@@ -820,6 +820,9 @@ export interface KeyBallIdentifiers {
   object_ball?: number;
   target_ball?: number;
   contact_sequence?: number[];
+  cue_ball_id?: number;
+  object_ball_id?: number;
+  target_ball_id?: number;
 }
 
 export function encodeKeyBallIdentifiers(
@@ -867,6 +870,27 @@ function _encodeKeyBallIdentifiers(
     writeByteBuffer(bb, packed);
     pushByteBuffer(packed);
   }
+
+  // optional uint32 cue_ball_id = 5;
+  let $cue_ball_id = message.cue_ball_id;
+  if ($cue_ball_id !== undefined) {
+    writeVarint32(bb, 40);
+    writeVarint32(bb, $cue_ball_id);
+  }
+
+  // optional uint32 object_ball_id = 6;
+  let $object_ball_id = message.object_ball_id;
+  if ($object_ball_id !== undefined) {
+    writeVarint32(bb, 48);
+    writeVarint32(bb, $object_ball_id);
+  }
+
+  // optional uint32 target_ball_id = 7;
+  let $target_ball_id = message.target_ball_id;
+  if ($target_ball_id !== undefined) {
+    writeVarint32(bb, 56);
+    writeVarint32(bb, $target_ball_id);
+  }
 }
 
 export function decodeKeyBallIdentifiers(
@@ -919,6 +943,24 @@ function _decodeKeyBallIdentifiers(bb: ByteBuffer): KeyBallIdentifiers {
         break;
       }
 
+      // optional uint32 cue_ball_id = 5;
+      case 5: {
+        message.cue_ball_id = readVarint32(bb) >>> 0;
+        break;
+      }
+
+      // optional uint32 object_ball_id = 6;
+      case 6: {
+        message.object_ball_id = readVarint32(bb) >>> 0;
+        break;
+      }
+
+      // optional uint32 target_ball_id = 7;
+      case 7: {
+        message.target_ball_id = readVarint32(bb) >>> 0;
+        break;
+      }
+
       default:
         skipUnknownField(bb, tag & 7);
     }