SARATOGA SPRINGS, NY - It's not your imagination that jockey Joel Rosario is having a big summer at Saratoga. Rosario, 37, is very much in the hunt for the overall title, a competition led by Irad Ortiz, Jr. Through Thursday's program, Ortiz had 37 wins, eight more than Rosario. However, in graded stakes races, Rosario is far and away the leader with 10 victories from 19 starts, a remarkable 53% win rate. Ortiz is next with five. With the 10, Rosario is in position to smash the current record of...