Rudy Rodriguez Jr.

Gokhan Kocakaya understood that this would be a challenge. In his native Turkey, he has won 2,910 races, was the leading rider for four straight years starting in 2019. He was riding in all of the major races and making a good living. But here he was on a chilly Monday morning galloping horses at Belmont Park, some 5,000 miles from home and in a place where almost nobody knows who he is. "I am new here," the 37-year-old jockey said through an interpreter. "I am not expecting to ride...