BOYNTON BACH, Fla. - Dunkirk, who remains on the bubble regarding his starting status for this year's Kentucky Derby, worked four furlongs in 49.06 seconds at the Palm Meadows training center on Friday. Breaking off about a half-length behind stablemate Checklist, Dunkirk posted splits of 12.66 and 24.88 before galloping out five furlongs in 1:01.18 while under a tight hold throughout. The work was Dunkirk's first since his second-place finish behind Quality Road in the Grade 1 Florida Derby on March 28. "We'll know a lot more where we stand regarding the Derby by the end of tomorrow," said trainer Todd Pletcher referring to Saturday's important Derby preps, the Blue Grass and Arkansas Derby. "Right now we're training him as if we're going to run in the Derby."