Update: NFL Players Missing at Sea

CLEARWATER, Florida (CNN) -- Rescuers are using computer models to try to find three missing boaters, including two NFL players, off the Florida coast Tuesday, the Coast Guard said.One of the missing men was rescued Monday, but the search for others passed the 48-hour mark earlier Tuesday.

Oakland Raiders linebacker Marquis Cooper, NFL free agent Corey Smith and former University of South Florida football player William Bleakley went missing Saturday after leaving on a fishing trip.

"It's just gut wrenching, and it's just left me zapped of any energy," Marquis Cooper's father, Bruce Cooper, said Tuesday.

"I know this, he's a fighter," he said, adding that his son was an undersized linebacker both at the University of Washington and in the NFL. "He doesn't back down. He's just an extreme fighter. What I'm holding on to is that he's out in the water right now, just fighting."

Man Found Clinging to Missing Boat

CLEARWATER, Fla. (March 2) - The Coast Guard says a missing boater has been found clinging to an overturned boat that belongs to Oakland Raiders linebacker Marquis Cooper.The Coast Guard says former University of South Florida player Nick Schuyler was rescued Monday off the coast of Florida.

The Coast Guard says Cooper, Detroit Lions free agent Corey Smith and another former USF player, William Bleakley, remain missing.

TV footage shows Schuyler being helped from a Coast Guard helicopter at Tampa General Hospital. He appeared conscious and talking.

The Coast Guard had been searching for the four men since they were reported missing early Sunday morning, one day after they left on a fishing trip.