Denis of Cork, one of the better early-season 3-year-olds of 2008, has been retired, trainer David Carroll said Friday.\nUnraced since finishing second in the 2008 Belmont Stakes, Denis of Cork had posted six timed workouts preparing for a return to the races. But his most recent work came on Jan. 4, and Carroll said Denis of Cork had reinjured the right foreleg that had taken him out of training 1 1/2 years ago.\n"He's still here with me, and we're letting him down right now," Carroll said. "He's the best racehorse I've had. It's just a shame."\nDenis of Cork, a 5-year-old horse by Harlan's Holiday, won 3 of 6 starts, scoring his lone stakes victory in the Grade 3 Southwest Stakes at Oaklawn Park. Denis of Cork finished third in the Kentucky Derby, skipped the Preakness, then was second to Da' Tara in the Belmont.\nCarroll said plans for Denis of Cork's future had not been decided.