Jockey Michael Hunter, 19, suffered a fractured vertebra and shoulder when he was thrown from his mount, King Renegade, in the first race yesterday at Bowie.

Hunter was admitted to Prince George's General Hospital, where he was listed in stable condition. He is expected to be out about six months.

Hunter and King Renegade were leading the race until midstretch, when they were caught by Detergent, ridden by Alberto Delgado. As Detergent pulled away, King Renegade swerved toward the rail. Hunter tried to restrain the horse, but King Renegade tripped and went down, throwing the jockey to the track.

Detergent finished first, but was disqualified and placed out of the money, leaving Quinsaba, a 11-to-1 shot, the winner.

See It Through, an early trailer, jumped clear of the fallen rider and horse, throwing apprentice jockey Clarence Ladner. Ladner was uninjured and rode out the rest of the card.

King Renegade was found to have a bruised sholder. See It Through apparently was not injured.

A trifecta payoff of $24,329.70 developed when Fiduciary, a first-time starter and a 14-to-1 shot, won the last race. Dina Dina Do, a 44-to-1 shot, finished second, and Northern Silence, an 8-to-1 chance, was third.