Updated March 20, 2017 13:07:26

Photo: Marc Leishman during the trophy presentation after winning the Arnold Palmer Invitational in Orlando. (AP: Phelan M Ebenhack)

Marc Leishman has booked an 11th-hour Masters berth with a one-shot victory at the US PGA Tour's Arnold Palmer Invitational in Florida.

Leishman fired a final round 3-under-par 69 to climb to 11-under to claim the title in Bay Hill, Orlando ahead of Americans Charley Hoffman and Kevin Kisner.

He entered the week outside the world's top 50 but now grabs an automatic exemption into the year's first major at Augusta National thanks to his first US PGA Tour title since 2012.

Leishman has some past form at Augusta National, having shared fourth place when countryman Adam Scott won in 2013 before missing the cut a year later.

"You see guys win and he (Palmer) is waiting there on the back of the green and to not have that is obviously very sad, but to win here is just a dream come true," said Leishman, who is set to rise to number 32 on the world rankings.

Fellow Australian and world number two Jason Day, the defending champion, finished in a share of 16th place on 2-under, a shot behind compatriot Greg Chalmers.

Day is expected swap places on the rankings with world number three Rory McIlroy, who made a charge with a 69 and his 9-under gave the Northern Irishman a share of fourth with England's Tyrrell Hatton (71).

Photo: Australia's Marc Leishman has shot a 3-under 69 to win the Arnold Palmer Invitational at Bay Hill. (AP: Phelan M. Ebenhack)

Leishman had a poor start, with a bogey on the par-four third hole dropping him to 7-under for the tournament.

The 33-year-old from Warrnambool in Victoria hit back straightaway with a birdie on the long fourth hole, and he had a bit of luck on the sixth, when his four-metre putt circled the cup before dropping in for another birdie.

He made it to the turn at 9-under, then went birdie-bogey at the 10th and 11th, but his big move came at the par-five 16th, where his eagle boosted him to 11-under.

"Mr Palmer was an awesome guy who I was lucky enough to meet a few times. To honour him was huge. And it was the first time I won a tournament with my family here," Palmer said.

"It's all come together."

Overnight leaders Hoffman and Kisner - both from United States - struggled in their final rounds.

Hoffman had four bogeys in five holes on the front nine before recovering late in the round for a 1-over round of 73 to finish on 10-under.

Kisner led on 12-under after a birdie on the short seventh hole, but dropped shots on the eighth, 12th and 14th cost him a chance of victory.

AAP/ABC

Topics: golf, sport, united-states

First posted March 20, 2017 09:02:45