NEW YORK (AP) _ Kentucky Derby winner Monarchos has a fractured bone in his right knee.

The injury was disclosed Thursday by trainer John Ward, who said the 3-year-old colt could be out of training for up to 60 days but might be able to race in the Breeders' Cup at Belmont Park on Oct. 27.

Ward described the injury as a subchondral hairline fracture.

``We gave him a thorough X-ray of his knees and ankles on Monday,'' Ward said. ``What we found was the tiniest, tiniest hairline fracture, almost a shadow, really. In fact, if it wasn't for a quality X-ray by Dr. (Jim) Hunt, it might have gone unnoticed.''

Monarchos, who also won the Florida Derby, followed his Kentucky Derby triumph with a sixth-place finish in the Preakness and a third in the Belmont Stakes.

``I'm sorry for the circumstance, but I'm happy for the horse because we were able to find this problem and deal with it, rather than have it come up later on with possibly worse results,'' Ward said.

``There is no surgery required. As a matter of fact, Monarchos has been walking at Belmont Park for about an hour a day and we will increase that time soon. IN about three weeks, we will see where we are. Right now, I would say it would be close to make it to the Breeders' Cup.''