CHELTENHAM, England - Johannesburg, the Breeders' Cup Juvenile winner and champion 2-year-old colt of 2001, worked Tuesday and remains on schedule for an attempt at the Kentucky Derby on May 4, trainer Aidan O'Brien said.
Speaking from the National Hunt Festival, O'Brien said that Johannesburg worked five furlongs in 56 seconds in Ireland and that he was not surprised by the quick time.
"His works are always fast," O'Brien said. "So far, so good."