A professional who determines entry sequence into starting gate and gives directions to riders and other track personnel to get horses into position for horse race. Responsibilities include:

• Evaluates performance and training record and observes horse's behavior to determine entry sequence.
• Directs entry of horse and rider into starting gate according to planned sequence and stall number.
• Gives directions to track personnel to assist rider when horse refuses to enter starting gate.
• Reports undue starting delay to racing officials.
• Presses button to open gate automatically when horses are correctly aligned.
• May recommend removal of horse unfit to start race.
• May schedule morning workouts for horses requiring familiarization with starting gate procedures.