Eight years after winning US Open on Father's Day, American Webb Simpson clinched his seventh PGA Tour title on another Father's Day as he lifted the RBC Heritage title at Hilton Head in South Carolina on Sunday. Dressed in his Sunday yellow shirt - his late father's favourite colour - Simpson emerged from a crowd of contenders with five birdies in a six-hole stretch on the back nine for a 7-under 64 to win by one shot over Abraham Ancer and set the 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, Abraham Ancer, Joaquin Niemann and Tyrrell Hatton were tied at 20 under at one point late in the round. It was a matter of who blinked first. 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 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. The PGA Tour now heads to the Connecticut for the Travelers Championship, and it's still to be determined who will be playing until coronavirus tests are released for those on the charter flight. The uncertainty stems from the first positive test - Nick Watney on Friday - along with tests for the 11 people who had been in close contact with Watney. Those 11 people were given two tests, with the second set of results released Sunday night. Both tests came back negative for all 11.