Bruce Vaughan won the Senior British Open on Sunday with a birdie on the first hole of a play-off against John Cook at Royal Troon Golf Club. It marks the first major title for the 51-year-old Vaughan, who carded a one-under-par 70 in the final round en route to finishing at six-under 278. Australian Greg Norman, third at the British Open just one week ago, ended the veteran&aposs version tied for fifth. The title wrapped up a surprising showing for Vaughan, who held a lead entering the weekend for the first time in his career when he carried a one-shot advantage into the third round. However, Cook grabbed control of the tournament with a 67 on Saturday and a strong start to the final round. Notching four birdies on the front nine, Cook led by three shots at the turn before everything went south for the American. Looking for his first major title on the Champions Tour and first title since the AT&T Championship in October, Cook began to fall apart with a double bogey on the par-four 11th and dropped another shot on the next hole. Cook, a runner-up to Nick Faldo at the British Open in 1992, still had a chance to seal the title with a par on the 18th, but bogeyed to finish at even-par 71 and fall into a play-off. Replaying the 18th in the play-off, Vaughan hit his drive down the fairway before knocking a six-iron to within 20 feet of the hole and cleanly knocked in the birdie. Cook, whose second shot put him within 12 feet of the pin, had his chance to match slip just past the hole to the right. Argentina&aposs Eduardo Romero finished in third a shot behind at five-under 279 following a 70. A two-time winner on the Champions Tour this year, Bernhard Langer was another shot back after signing for a 68. Five-time British Open champion Tom Watson ended up in a tie for fifth at 282 with a closing 70. Watson was joined by Norman and Gene Jones.