In 2012, just two years after he began playing competitive golf as a middle school student, Kim drew attention by becoming the youngest golfer ever to make it through PGA Tour Q-School.
But the South African ran up a double bogey on the fourth and dropped another shot on the ninth, before following an eagle on the 11th with further bogeys on the 13th and 14th.
Who is Si Woo Kim?"They say you need experience to do well at the majors, but if I can study the course beforehand and prepare accordingly, I think it's possible (to capture a major)".
Kim became the second South Korean to win the event after KJ Choi in 2011 and he said he hoped his victory would help inspire his countrymen to raise their game.
But the real star of the weekend was TaylorMade player Kim who managed to hold his nerve among 48 of the world's top-50 golfers to finish The Players with an incredible 10-under 278.More news: Palmetto Poison Center issues caffeine warning after teen's death
More news: Special prosecutor abruptly named to probe Trump-Russia ties
More news: House leader Kevin McCarthy suggested Putin was paying Trump
Rafa Cabrera Bello of Spain was never going to win, but it will be hard to forget how he finished.
Kim upset a field that included most of the world's top 50 golfers to win the tournament in Florida, often referred to as the "fifth major". Making its 15 consecutive appearance at TPC Boston, the Dell Technologies Championship will showcase the top 100 players in the FedExCup standings over Labor Day weekend, August 30 to September 4.
Louis Oosthuizen, of South Africa, looks down after his second shot of the fourth hole went in the water during the final round of The Players Championship golf tournament Sunday, May 14, 2017, in Ponte Vedra Beach, Fla. He now has a five year exemption on the PGA Tour, a three-year exemption to The Masters and a cheque for $1,890,000. Poulter, who just a few weeks ago thought he had lost his PGA Tour card, played the best we've seen of him in months.
The PGA Championship is the European Tour's flagship event, while the PGA Tour is a season of tournaments played mainly in the United States.
"I still can't believe I'm the champion, and I'm very excited that I am the youngest champion", Kim said during the post-tournament interview. He earned a card at age 17, but he could not become a PGA Tour member until he turned 18 the following June. He followed with a short birdie on the 17th and a long par from just off the 18th green.