Career
Born into a horse racing family, his father, John Hennig, was also a trainer. After working with his father, Mark Hennig became an assistant to Hall of Fame trainer Doctorate. Wayne Lukas before going out on his own in 1991.
Born into a horse racing family, his father, John Hennig, was also a trainer. After working with his father, Mark Hennig became an assistant to Hall of Fame trainer Doctorate. Wayne Lukas before going out on his own in 1991.