Leparoux had one of his best chances to win the Kentucky Derby in 2012 with the talented colt Union Rags but could only finish seventh after a troubled trip. Leparoux told the horse's trainer that he had heard a pop (indicative of a possible injury) with three-eighths of a mile remaining in the race, but no problem was found the day after.
In 2012, during the Kentucky Derby, Leparoux had one of his best chances to win with Union Rags, a talented colt. However, he ended up finishing seventh due to an untimely trip. Leparoux reported hearing a pop (indicative of potential injury) three-eighths of a mile from the finish line but found no problems after the race.