A professional who drives horse-drawn, two-wheel sulky in harness race. Responsibilities include:

• Studies performance record of competing horses to plan race strategy.
• Controls speed of horse in specific sections of racetrack, applying knowledge of harness racing to determine when to challenge for lead of race.
• May train own harness racing horses.
• May direct activities of workers involved in grooming, training, feeding, stabling, handling and transporting harness race horses.