Jockey Travis Dunkelberger, the nation's leader rider in wins by a narrow margin, broke his collarbone Wednesday night in the seventh race at Charles Town and is expected to be sidelined for at least four to six weeks.
On Thursday, Dunkelberger, 24, said his mount, Southern Trail, stumbled and broke his leg, tossing the rider to the ground near the sixteenth pole.
Dunkelberger said he was scheduled to meet with a doctor Friday morning to see if the break required surgery.
"In my opinion it probably will need [surgery] because it's separated," Dunkelberger said.