Puerto Rican horse jockey who amassed over 4,000 wins in his career, including a 2011 win at the Kentucky Derby.
He won his first race in 1990 at age 19.
He was inducted into the National Museum of Racing and Hall of Fame in 2011.
He and his wife, Leona O'Brien, have two children: Lerina and Michael.
He and Willie Shoemaker became two of the winningest horse jockeys.