Back injury is a concern as Rory struggles to rediscover form
Rory McIlroy continued to find the going tough at the Players Championship as he finished well adrift of the leaders.
The world number two shot 75 in his final round at Sawgrass to finish on two over par.
McIlroy is set to undergo an MRI scan today to determine the extent of an injury which hampered his efforts at Sawgrass.
The four-time major winner, whose week came to a disappointing conclusion with a double-bogey six on the 18th, hopes it is not a recurrence of the back and rib problem which kept him out for seven weeks earlier this season.
South Korea's Si Woo Kim finished on 10 under par, three shots ahead of Ian Poulter and Louis Oosthuizen to lift the prize of almost £1.5million.
Graeme McDowell hit a disappointing final round 80 to end the tournament on nine over par.
Four bogeys in five holes set the tone for the Portrush man's round.
Meanwhile, England's Matt Wallace held off a two-pronged assault on the final day to claim his first European Tour title with a superb wire-to-wire victory in the Open de Portugal.
Wallace held a five-shot lead at the halfway stage and was still three ahead starting the final round, but saw his advantage reduced to a single shot, first by German Sebastian Heisele and then American Julian Suri.
However, the 27-year-old Englishman held his nerve to card four vital birdies in a closing 69, his third bogey-free round of the week at Morgado Golf Resort giving him a winning total of 21 under par.
"It's the best feeling ever," Wallace said after rounds of 63, 66, 73 and 69. It's always been a dream to win on the European Tour. Those first two days were really easy, that third day was the hardest day of my life and today was tough but I'm really happy.
"A good friend of mine, Tom Lewis, won here in Portugal and I spoke to him yesterday and he has great memories here."