Jose Ortiz, the leading jockey in North America in purse money this year, was taken to a Long Island hospital to have his left knee examined after being involved in a spill in Wednesday’s ninth race at Belmont Park.

Ortiz was complaining of pain in his knee when he tried to flex it, according to a nurse at Belmont Park’s First-Aid department. Ortiz had his knee and ankle wrapped up as he was being wheeled on a gurney out of First Aid and to an ambulance. The ankle was swollen, but he was not complaining of pain, the nurse said.

Ortiz was aboard Submit, a 3-year-old filly trained by Christophe Clement making her fourth career start, this one in a maiden $40,000 claiming turf race.

In the stretch, Submit was making a belated run toward the leaders when she took a misstep, suffering a cannon bone fracture to her left foreleg. She was euthanized on track.

Ortiz lay on the turf course before being helped up by medical technicians and he limped to the awaiting ambulance. After being transported to First Aid the decision was made for him to get examined at the hospital.

Ortiz is the leading jockey in purse money won this year with $21 million. His 216 victories _ which include a victory on Tapwrit in the Belmont Stakes _ have him ranked fourth nationally. Ortiz is coming off his second straight riding title at Saratoga.

In races of note this weekend, Ortiz is named to ride Lockdown in the Grade 1, $1 million Cotillion Stakes Saturday at Parx and Petrov, the 2-1 morning-line favorite, in the $300,000 Gallant Bob also at Parx on Saturday.

Will update later at drf.com