Jason Day emulated his boyhood idol Tiger Woods when he clinched a one-stroke victory at the Arnold Palmer Invitational in Florida on 20 March. He was not at the top of his game, but did enough to clinch his fifth victory in his past 12 starts on the PGA Tour.

With tournament host Arnold Palmer watching on, Day got up-and-down from a greenside bunker at the final hole, sinking a four-foot par putt after earlier holing a clutch 12-foot birdie at the par-three 17th.

"Everyone is asking what's going on, why aren't you playing that great and I've been saying it's a process, I just want to kind of stick to what I've been working on and be patient with myself and the process finally paid off this week," the Australian told reporters after carding a closing 70 on the Bay Hill course in Orlando.

He finished at 17-under-par 271, while American Kevin Chappell (69) claimed second place on 16-under after bogeying the last. Day collects $1.13m (£790,000) for his eighth victory on tour. He also rises from third to second in the world rankings.

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It is the third time in four events an Australian has won on the US circuit, with Adam Scott having triumphed at the Honda Classic and WGC-Cadillac Championship. Day revealed he had received a text message on Sunday morning from eight-times Bay Hill winner Woods, who is out indefinitely while recuperating from back surgery.

"He's been a big influence in my life ever since I was a kid and to have his advice, to be able to go see him and practice with him and pick his brain about numerous things that I want to try and improve my game has been a big credit to him," Day said of Woods.

The long-hitting Australian grew up wanting to follow in the footsteps of Woods, who is 12 years older. But Day did not play like the 14-times major champion early in the final round, running up three bogeys in the first six holes to open the door to his rivals. It then became a three-man race late in the round between Day, Chappell and American Troy Merritt.

Chappell, playing ahead, had the lead with one hole left, but dropped a shot at the par-four 18th after a poor drive finished in punishing rough and gave him little choice but to lay up. That opened the door for Day, who also pushed his drive at the last, but drew a decent lie and was able to clear the pond in front of the green and advance his ball into a bunker.

Merritt, meanwhile, could have forced a playoff with a birdie at the last, but instead found a watery grave with his approach shot, ran up a double-bogey and tied for third with Swede Henrik Stenson, three shots off the pace.