TULSA — Just a few hours after playing in his final high school golf tournament, Bethel's Kyle Lewis died in a single-car accident Monday on the Turner Turnpike near Stroud.

Earlier in the day, Lewis had competed in the All-State golf tournament at Emerald Falls Golf Club in Broken Arrow.

Lewis was alone in his car, which left the road and struck a bridge embankment. It was unknown as of Monday night why Lewis' car went off the road.

''There are just no words to describe something like that," said Tommy Block, the Bethel High School athletic director and longtime friend of Lewis' father, Marty. "All we can do is pray for the Lewis family."

After Monday's tournament, the Oklahoma Golf Coaches Association awarded Lewis the Jim Thorpe Boys Golfer of the Year trophy.

A moment of silence will be observed at the rest of the All-State events this week.

Lewis was a state champion in 2008 and finished runner-up at the state tournament each of his other three high school seasons. He was one of seven golfers all-time to finish in the top four at state all four years.

Also a basketball player, Lewis had signed a letter of intent to play golf at OU and planned to move to Norman next month.

''Our condolences go out to his family," OU golf coach Ryan Hybl said. "The OU golf family will be hurting, too. Kyle was a valedictorian, a good basketball player — he was going to be a great ambassador for our university.

''But more than that, he was just a great young man. We will all definitely miss him."