Apprentice jockey Rodney Dickens, a 19-year-old from Evansville, Ind., was killed in a spill during the fifth race at Sportsman's Park on Sunday, resulting in the cancellation of the day's final three races.

The accident occurred approaching the stretch turn of the 6-furlong race when Special Little Guy, a 3-year-old gelding ridden by Francisco Torres, broke his leg and fell heavily.Dickens, riding a 4-year-old gelding named Rough Pride, was directly behind Special Little Guy and became unseated when Rough Pride vaulted over the fallen horse. Dickens sustained severe head injuries and was hit by oncoming horses. He died at MacNeal Hospital in nearby Berwyn, a hospital spokeswoman said.