Ty Detmer came down to Earth in a hurry.

Fresh from his Heisman Trophy victory, he threw four interceptions that helped Hawaii shock No. 4 Brigham Young 59-28 Saturday night, dropping the Cougars out of contention for the national championship."After a loss like this, you just can't enjoy it the way it should be enjoyed," Detmer said. "At BYU, we don't take losses well."

His brief answers and somber tone were a sharp contrast to the Detmer of a few hours before, who thrust his right fist into the air when the Downtown Athletic Club of New York named him the winner of collegiate football's biggest individual honor.

Detmer received 316 first-place votes and 1,482 points in nationwide voting by 917 sports journalists for the Heisman. All-purpose star Raghib "Rocket" Ismail of Notre Dame was second with 237 first-place votes and 1,177 points.

Colorado running back Eric Bieniemy (114 and 798), Virginia quarterback Shawn Moore (46 and 465) and Houston quarterback David Klingler (7 and 125) followed.

Rounding out the Top 10 finishers were Virginia wide receiver Herman Moore, Washington running back Greg Lewis, Miami quarterback Craig Erickson, Texas A&M running back Darren Lewis and Army's Mike Mayweather. Players receive three points for a first-place vote, two for second and one for third.

"I don't know of anyone in the country that's more deserving," BYU Coach LaVell Edwards said. "He not only put up the numbers and had a great year that way, but he's won a conference championship, and he's got his team ranked very high nationally."

Detmer, a 6-foot, 175-pound junior, is the latest in a long line of great BYU passers. But he surpassed them all by winning the Heisman.

"We've had great quarterbacks in the past, and none of them won it. It's about time we won one," Detmer said.

Steve Young was runner-up to Nebraska's Mike Rozier in 1983, while Marc Wilson, Jim McMahon and Robbie Boscoe each finished third.

Detmer has already set or tied 25 NCAA passing and total offense records. If he plays another year, he could break virtually every NCAA career passing record.

He is second on the NCAA's career yardage list with 11,000 - 425 behind all-time leader Todd Santos of San Diego State. He has thrown for more than 300 yards in 24 consecutive games.

Despite his shaky performance against Hawaii, Detmer's 319 yards allowed him to set the NCAA single-season passing yardage record. His 5,188 yards were 48 more than Klingler, who passed for a single-game record of 716 yards in his final game against Arizona State.

Detmer said the Heisman hype - seemingly endless television and newspaper interviews - had worn on him. But he said it had no effect on his performance against Hawaii.

"I came ready to play," Detmer said. "After last year (another Hawaii upset), we all came ready to play. They just beat us."

Detmer is the 10th underclassman to win the Heisman and the third junior in a row to claim the award. Barry Sanders of Oklahoma State won in 1988, and Houston's Andre Ware won in 1989. Both left school after their victories and turned professional.

Detmer says he'll be back to try to win the trophy again in 1991.

The Heisman "is just an extra benefit to this season," he said. "It shouldn't change whether I'm coming back or not."