Hatton was close to winning his second 2020 PGA Tour title on the Harbor Town course at Hilton Head IslandRBC Heritage, 22 W Simpson (USA); -21 An Ancer (Mex); -20 T Hatton (Eng), D Berger (US) Selected: -19 S Garcia (Spa); -18 B Koepka (USA); -17 J Thomas (USA), B DeChambeau (USA), R Palmer (USA); 16 I Poulter (Eng), J Rose (Eng), M Fitzpatrick (Eng); -11 R McIlroy (NI); -5 M Wallace (Eng)
Joint leader Tyrrell Hatton shot a final round of five under 66, but ended two shots behind RBC Heritage winner Webb Simpson in South Carolina.
Simpson carded a bogey-free 64, with five birdies in the last seven holes, to win on a tournament record of 22 under.
Abraham Ancer shot a 65 when he finished second at 21 bottom in Hilton Head.
Englishman Hatton, who shared the lead with Simpson, Ancer and Ryan Palmer after round three, had four birdies on his front nine when he finished 20 under.
American Daniel Berger, who won in Colonial last week, had three birdies in his last four holes, including a chip-in two on par-three 17, when he shot a six-under 65 to Hatton as to join a third party.
It was an exciting last day at the Harbor Town Golf Links course despite the second closed-door event of the PGA Tour being about three hours behind schedule due to storms on the South Carolina coast.
At one point, six players shared the lead, but Hatton, who won the Arnold Palmer Invitational in March – the last PGA Tour event to be completed before the corona virus ended – jumped clear to divide at 19 down with four birdies in five holes from the second.
However, he was unable to build on that momentum, parry the next five holes and then trade a birdie for a bogey on the 12th and 13th, before picking up his last shot on the 16th.
Ancer, who did not miss a green in the regulations in the last round, also caught four birdies on the front nine to reach the turn at 19 bottom. Further birdies on the 15th and 17th caused him to need one last to force a playoff, but with darkness falling he couldn't make a 37 foot pit.
That left Simpson, a father of five, to celebrate his second victory on Father's Day. His first was in 2012 when he won the US Open, which traditionally ends on Father's Day and would be played this week before the coronavirus pandemic hit.
"It was a crazy day," said 34-year-old Simpson, who also won in Phoenix in February and will jump to fifth in the world rankings on Monday.
Ian Poulter, who led after the first round, finished with a 68 and finished 16 under, along with fellow Englishmen Justin Rose (65) and Matt Fitzpatrick (68), while number one from North Ireland, Rory McIlroy, with a total of 70 and 11 ditches.