FLORENCE, Ky. - Jockey Michael Rowland was in critical condition Thursday, one day after being involved in a three-horse spill at Turfway Park.

Rowland's agent, Mike Greenfield, said he was told by the jockey's family that Rowland was in a coma and had brain damage.

"It's not looking good,'' Greenfield said. "But from what I've heard, even the best case scenario is not going to be really good.''

Rowland had surgery Wednesday night, but the extent of his injuries was not immediately known, track spokesman Sherry Pinson said.

Pat Samson, spokeswoman for University Hospital in Cincinnati, refused to comment on Rowland's injuries.

Rowland was riding 5-year-old World Trade in the seventh race, a $13,900 claiming race for 4-year-olds and up.

Turfway track announcer Mike Battaglia said Rowland's horse was leading when it broke down.

"He was in front when his horse broke his leg,'' Battaglia said. "He got stepped on and kicked. I knew it was really bad ... I looked back on the racetrack and he never moved.''

Mark Johnston, aboard Miner Moss, was also involved in the spill and was treated for a broke collarbone. Jockey Jessica Endres sustained bruises, but was not hospitalized.

Rowland has 3,998 career victories and is Thistledown's winningest jockey with 29 meet titles.

Turfway Park canceled Thursday's card out of concern for Rowland and his family, Pinson said.