Kentucky Derby winner Giacomo will be sidelined for at least two months after chipping a bone in his ankle.
The three-year-old son of Holy Bull is due to undergo surgery next week to remove the chip but trainer John Shirreffs expects him to make a full recovery.
He told www.thoroughbredtimes.com: “We X-rayed him this week and found a small chip in his left ankle.
“It looks like a pretty fresh chip. Dr (Rick) Arthur returns Monday, so we will probably do the surgery here Tuesday or Wednesday.”
Giacomo, who is expected to stay in training next year, also finished third in the Preakness Stakes before disappointing when only seventh in the Belmont Stakes last Saturday.