The San Felipe Stakes winner galloped Sunday and took some bad steps coming off the Churchill Downs track, where the Derby will be run this Saturday.

"These type of things always seem to happen," trainer D. Wayne Lukas said. "You just hope it doesn't happen to you."

Lukas said he grew concerned when the colt was tentative during his Sunday afternoon walk around the barn. The Hall of Fame trainer had an X-ray taken Monday that showed Consolidator had fractured his sesamoid.

Lukas said the colt would not require surgery; he will be treated with stall rest.

"I think he'll stay with me for a while," Lukas said. "He will not run again. I think he'll have a stud career. With sesamoid injuries, you can bring back a $25,000 claimer on Wednesday, but not this level of horse."

Consolidator is owned by Bob and Beverly Lewis, who won the Derby in 1997 with Silver Charm and in 1999 with Charismatic. The couple and Lukas will still have a horse in the race with Going Wild.

"We've been blessed -- Bob and Beverly and especially myself -- in this race," Lukas said. "It would be selfish of me to say, 'Oh, my gosh' and feel sorry for our situation."

The Lewises paid $1.25 million for the son of Storm Cat in 2003. Consolidator had three wins in 10 career stars and earnings of $661,760. He won the Grade 1 Lane's End Breeders' Futurity as a 2-year-old and the Grade 2 San Felipe on March 19.

The withdrawal of Consolidator opens a spot in the anticipated 20-horse field for Illinois Derby winner Greeley's Galaxy. His owner, B. Wayne Hughes, will have to pay a $200,000 supplemental fee because the colt wasn't nominated to the Triple Crown series.