Webb Simpson had five birdies in a six-hole stretch on the back nine for a 7-under 64 to win the RBC Heritage by one shot over Abraham Ancer and set a tournament scoring record.

A three-hour storm delay nearly kept it from finishing. Nine players were still in the mix with an hour to go. Simpson was two shots behind and had only two birdies on his card when he dropped in a 10-footer at No. 12 and off he went.

“I think it’s a good thing that guys were making birdies because they kind of forced me to be a little more aggressive and know that pars weren’t going to cut it,” said Simpson, who finished at 22-under 264 to break by two shots the tournament record Brian Gay set in 2009.

Ancer, who hit every green in regulation, pushed Simpson to the end in his bid to win his first PGA Tour title. He holed a birdie putt from 10 feet on the 17th to get to within one, but his approach to the 18th was 40 feet away and his putt to force a playoff came up short. Ancer closed with a 65.

“That’s just golf. You’ve just got to keep trying,” Ancer said. “I’m not going to change anything or work on anything. I’m just going to keep doing what I’m doing, and I think that will eventually happen.”

Colonial winner Daniel Berger also stayed in the mix by chipping in for birdie on the 17th and closing with a 65. Hatton, whose last tournament was his victory in the Arnold Palmer Invitational, was leading until a poor tee shot led to bogey on the 13th, and bogeys were hard to recover from on this day. He shot 66 and tied for third.

Simpson, who won the Phoenix Open in February, moved to No. 5 in the world. He also moved to the top of the FedEx Cup.