Victor Espinoza, jockey who won Triple Crown in 2015, injured in Calif.
Jockey Victor Espinoza seen May 2, 2015, in Louisville, Ky. Getty DEL MAR, Calif. — Jockey Victor Espinoza was injured when the horse he was riding at Del Mar racetrack collapsed during training and died. Racetrack officials say Bobby Abu Dhabi suffered an apparent fatal heart attack during a workout Sunday morning. Espinoza was thrown off the horse, then lay…