SONOMA, Calif. (AP) – Tom Watson rallied from a six-shot deficit with an 8-under 64 Sunday to win the Charles Schwab Cup Championship, the season-ending event on the Champions Tour.

Watson surged up the leaderboard as third-round leader Jay Haas struggled, finishing at 16-under 272 for his second win of the year and eighth victory on the Champions Tour.

The Senior British Open champion, who had 39 PGA Tour victories, earned $440,000 and also claimed the Charles Schwab Cup points race and a $1 million annuity.

Haas, going for his third win in four weeks, closed with a 71 and was one stroke back. Tom Kite had a final-round 67 and was third at 13 under. Mark McNulty was 11 under after a closing 68, and Loren Roberts and leading money winner Dana Quigley were another stroke back in fifth after 70s.

Quigley, playing in the final pairing with Haas, tried to put pressure on his playing partner early. Also starting six stokes back, Quigley opened with three straight birdies three birdies, but gave strokes back with bogeys at Nos. 6 and 8 and fell off the pace.

Haas struggled with his putting early and made the turn in even-par after a birdie and a bogey on the front nine. He made consecutive birdies to open the back nine, despite hooking his drive at the 11th. He hit his second shot pin-high to set up a short birdie putt. He also hooked his tee shot at No. 12 and made another bogey as his lead dropped to a stroke.

As Haas struggled, Watson made his move with birdies at Nos. 8, 9, 11 and 12, closing within two shots of the lead.

After hitting his second shot at the par-5 13th into a bunker short of the green, Watson left his third shot well short and chipped to 11 feet before saving par.

Haas had a chance to send the tournament into a playoff, but left an 18-foot birdie putt at the 18th about 17 inches short.

AP-ES-10-30-05 2033EST