Colin Montgomerie won the US Senior Open after a play-off at Oak Tree National in Edmond, Oklahoma.
The 51-year-old Scot came from four shots behind overnight leader Gene Sauers to force the three-hole play-off.
Montgomerie shot a final round of 69 as he and Sauers finished on five under par, four strokes clear of the nearest challengers.
The title comes seven weeks after he won the Senior PGA Championship.
"You talk about the Ryder Cup and one-on-one - I'm usually quite good. A play-off in a golf tournament is like a penalty shootout in the World Cup. You don't know what's going to happen," said Montgomerie.
The play-off took place over the final three holes of the Oak Tree National layout, with both players dropping a shot at the 16th.
But Glasgow-born Montgomerie sank a 13-foot par putt at the short 17th to take the lead, and a par at the last was good enough to secure the win.
Among the rewards for the Scot is a spot in next year's US Open, a tournament in which he has been a runner-up on three occasions.
"My play-off record is pretty weak, to be honest. I think I've been in 10 worldwide and won one of them up until today," he said.
"I've lost in a play-off - 1994 - and been one shot behind a couple of times - in 1997 and 2006 - and you have to wait until you're 50 to finally win one."
Sauers, who won three times on the PGA Tour, struggled on Sunday but came close to winning at the final hole of regulation play, having hit a four-iron to six-feet only to lip out with his putt.