A 26-year-old jockey, Sheldon Russell, was taken to Northwest Community Hospital on Thursday after he was injured in the paddock before the first race at Arlington International Racecourse on Thursday.
Russell, who was scheduled to ride Private Prospect in the opening race, was conscious and complaining of pain in his left foot, according to a statement released by track officials.
Later, it was revealed that Russell had "a broken foot, partial ACL tear and a severe bruise," according to information provided by his agent, Doug Bredar.
Russell, riding at Arlington on a full-time basis for the first time in 2014, entered Thursday in sixth place in the jockey standings with 20 victories.
The horse, a 2-year-old first-time starter, was not injured and went on to win the 4 ½-furlong race under substitute rider Florent Geroux.