Nehro, who finished fourth in the Belmont Stakes on Saturday, came out of the race with a small chip in his right front ankle and will have surgery in Kentucky on Wednesday, owner Ahmed Zayat reported on Monday.
Nehro on Monday morning was "flying now to Kentucky," from New York, Zayat said, in order to have surgery with Dr. Larry Bramlage on Wednesday morning at the Rood and Riddle equine clinic in Lexington.
"Must have happened in the race," Zayat said. "A brave colt with a huge heart."
Nehro, trained by Steve Asmussen, finished second in the Kentucky Derby in his previous start.