Leading from the get-go, Tewell fired a tournament record 10-under-par 62 to take home his second career Senior major in The Countrywide Tradition at Scottsdale, Ariz.
Doug Tewell talks about his win
Tewell finished the event at 23-under-par 265, just two strokes shy of the 72-hole tour scoring record.
His four-day score on the Cochise Course at Desert Mountain was a far cry from Tom Kites 8-under-par victory a year ago. In fact, it was one shot lower than the previous tournament record, set by Gil Morgan in 1997.
We talked about the zone, and the zone was there today for me, said Tewell, who earned $255,000. I just stayed in it, stayed within myself, stayed away from the mistakes, and thats what you have to do, I think, to win a major.
Mike McCullough (69) birdied the final hole to grab solo second place at 14-under, nine shots back of Tewell. Hale Irwin (67) finished in third place at 13-under. The winner of six Senior majors, Irwin still lacks The Tradition to his resume.
Tewell earned his first tour major at last years PGA Seniors Championship. It was one of his three victories in a season that also included Rookie of the Year honors.
Tewell won in wire-to-wire fashion, opening in 66 and never looking back.
He entered the final round with a two-shot advantage over Larry Nelson and Mike McCullough, both of whom have two wins under their respective belts this season.
However, each faltered early on Sunday. Nelson double bogeyed the 3rd and never contended. Despite two birdies over his final three holes, he shot 3-over-par 75 to finish in a tie for fifth place, 15 shots behind Tewell.
McCullough bogeyed the 1st, doubled the 2nd and bogeyed the 5th; before recording seven birdies to earn a runner-up finish.
Tewell started his final round with a birdie at the 1st and added two more before making the turn.
He then removed any doubt that this championship was his by playing his first three holes on the inward half in 4-under. Tewell birdied the par-4 10th and par-3 11th, and then eagled the par-5 12th with a 20-foot putt.
That really won the golf tournament, Tewell said. That three-hole stretch right there basically put it away.
Leading by nine at 20-under-par, Tewell didnt let up, birdieing the 15th, 16th and 18th holes for a back-nine 29.
Full-field scores from The Tradition