Rocco Mediate birdied the 18th hole and finished with a 1-under-par 71 to win the Allianz Championship on Sunday.
He finished the tournament at 17-under 199 and became the 16th player to have a winning debut on the Champions Tour.
Mediate's 4-foot birdie putt came after Tom Pernice Jr. missed a 5-footer at No. 18 that could have forced a playoff.
Mediate started the day with a three-shot lead, lost it by the 14th hole, but regained it when Pernice bogeyed the par-4 17th from a greenside bunker. Mediate protected that lead with a birdie on the par-5 closing hole.
''I'm ecstatic,'' Mediate said. ''I have been saying all week it's never easy. It shouldn't be easy. I was prepared to make that putt (at No. 18), but I didn't have to.''
Pernice, who had a final-round 70, finished tied with Bernhard Langer (68) for second place.
Pernice was the last player to win his Champions Tour debut, three years ago, but he is still searching for his second title.
''I played better than any othe...