Hatton & # 39; s final round contained two bogeys, two birdies and a double bogeyArnold Palmer Invitational final leaderboard-4 T Hatton (Eng); -3 M Leishman (Aus); -2S Im (Kor); -1 B DeChambeau (USA); level K Mitchell (US), J Dahmen (US), D Lee (NZ), R McIlroy (NI) Selected others: +1 M Fitzpatrick (Eng); +3 P Reed (US); +4 D Willett (Eng); +5 M Wallace (Eng); +6 I Poulter (Eng), G McDowell (NI)
Tyrrell Hatton sealed the first English win over the Arnold Palmer Invitational and his first PGA Tour title with an eventful one-shot win over Bay Hill.
His two-stroke nocturnal lead had gone into the first five holes after two bogeys on lightning-fast greens.
Hatton, 28, also had a double bogey in a two-over 74 but finished four under, one winner Marc Leishman for 2017.
Rory McIlroy, jointly second at the start of the day , had two double bogeys in a 76 and was four back in the fifth.
"It was such a tough day," Hatton said. "After the double in 11 I thought I had played it out because I didn't see the scoreboard.
" The putt at 18 – I've never been so nervous. I will never forget this week. "
There were 44 players under par after Thursday's first round but only four towards the end of the tournament.
Saturday's average score of 75.91 was the highest of each round in Bay Hill since 1983 – with only one player under par – and it was the first non-major to have had no round in the 60s since 2014.
The circumstances were just as challenging for Sunday's final round because of more swirling winds and rock hard pit surfaces and Hatton dropped a shot at his opening hole after finding a fairway bunker.
Play partner Leishman, two shots back alongside winner McIlroy 2018, saw his challenge controlled by a double bogey in the third after he found water with his drive.
McIlroy drilled a fine putt from the edge of the green to drop only one shot at the fifth, but then thinned one out of a fa irway bunker on the rocks at the next one and ran a double bogey let two shots fall off the lead.
A drive out of bounds led to another double bogey in the ninth and dropped him to par level for the tournament, by which time Hatton was ahead again after a beautiful tee shot to two feet on the 195- yard par three seventh.
The Englishman moved two out of the field with a second consecutive bird but after finding the water with his drive on the 11th he drove through the green and made a double bogey to fall back in a draw to the top with Sungjae Im.
Remarkable Im, winner of last week's Honda Classic, then made a double bogey after finding water with his approach to 13th and world number 32 Hatton managed to find his way to a memorable triumph, running from two feet for the title.
Matthew Fitzpatrick from England produced the only sub-70 round of the weekend – with four birdies in the first six holes – and despite a double bogey on the 17th he returned a 69 to fini sh with an over it total and a share of the ninth.