MANHASSET, New York (CMC): Jamaican jockey Rajiv Maragh has been side-lined indefinitely after undergoing surgery yesterday to repair his right arm, which was broken in a fall at Belmont Park on Saturday.

The New York Racing Association's press office confirmed the surgery in an advisory.

Maragh was aboard Wicked Strong in the US$1 million Jockey Club Gold Cup Stakes when he was thrown after the horse clipped heels with Moreno, ridden by Junior Alvarado.

Broken arm

He was taken to North Shore University Hospital in Long Island complaining of pain in his right arm, and tests subsequently revealed a broken arm.

The highly rated reinsman was expected to feature in the prestigious Breeders Cup series at Santa Anita Park from October 31-November 1, but is now likely to miss that outing.

"They put in a couple of plates and some screws, and he seems to be fine," said Maragh's agent, Tony Micallef. "We don't know yet how long he will be out."

The 29-year-old has already won a Breeder's Cup event with Caleb's Posse to victory in the Dirt Mile three years ago, and he was also good enough to finish third in the 2011 Kentucky Derby with Mucho Macho Man.

He was fourth in the Derby with Wicked Strong in May.