In 2012, the year he turned 17, he passed the final stage of PGA Tour Qualifying School, the youngest ever to do so. In 2013, he made his first PGA Tour start as an invited player at the Pebble Beach Pro-Am, and in June he turned 18 and became eligible for full membership. In 2014, he lost his card and played on the second-tier Web.com Tour.
In July 2015, he won the Web.com Tour Stonebrae Classic, and in August he secured a PGA Tour card by finishing 10th on the money list. In August 2016, the year he turned 21, he won the Wyndham Championship for his first PGA Tour title, then the youngest Korean winner.
The breakthrough yearIn May 2017, the year he turned 22, he won The Players Championship as its youngest winner. Mania Report writes that he made his name with this win. In October he played for the International team at the Presidents Cup.
In January 2021, he won The American Express for his third career win. In September 2022, he was named a Presidents Cup captain’s pick, and in December he married Oh Ji-hyun.
In January 2023, he won the Sony Open for his fourth career win, and in October he won gold in team golf at the Hangzhou Asian Games. In August 2024, he tied for fifth at the BMW Championship, his best finish of that season.
In December 2025, he finished alone in third at the Crown Australian Open and earned a place in the 2026 Open Championship. In May 2026, he was runner-up at the CJ Cup Byron Nelson, and in July he tied for sixth at the Open Championship. In August his world ranking reached 13th, his best at the time, and in September he won three team matches with Tom Kim at the Presidents Cup.
Kim Si-woo (born Jun 28, 1995) passed the final stage of PGA Tour Qualifying School in Dec 2012, the year he turned 17, the youngest ever to do so, and became known when he won The Players Championship on May 15, 2017, the year he turned 22, as its youngest winner. His first PGA Tour win was the Wyndham Championship on Aug 22, 2016, the year he turned 21.
Ages are by calendar year (the year minus the birth year), birthdays aside.
Finished first at the second stage of Q-School in California. In round two he shot 11-under 61, breaking Rickie Fowler’s course record of 9 under.
Source 01 · Segye Ilbo (Korean) · Youngest ever through Q-School · opens in a new tab The article gives no day, so only the month is shown.At 17, finished 20th at 18 under over six rounds at the final stage of Qualifying School and earned a 2013 PGA Tour card. He was the youngest player ever to pass it. Because players had to be 18 or older to hold a tour card, he could enter up to 12 events on sponsor invitations.
Source 01 · Segye Ilbo (Korean) · Youngest ever through Q-School · opens in a new tab The articles do not give the date of the final round, so only the month is shown.Played the AT&T Pebble Beach National Pro-Am as an invited player, his first PGA Tour start. He shot a 3-over 75 in the first round and missed the cut.
Source 02 · Edaily (Korean) · PGA Tour debut set · opens in a new tabSource 03 · Newspim (Korean) · 75 on day one of his debut · opens in a new tabSource 04 · Yonhap News Agency (Korean) · Official debut at 18 · opens in a new tab The date is the opening day given in advance reports.Turned 18 on his birthday and became eligible for full membership. Before that he could play only as an invited player, and he withdrew from the Puerto Rico Open in March.
Source 04 · Yonhap News Agency (Korean) · Official debut at 18 · opens in a new tabIn 2013 he played eight PGA Tour events, missed the cut seven times and lost his card. In 2014 he played 19 events on the second-tier Web.com Tour and made four cuts.
Source 05 · Hankook Ilbo (Korean) · Three years of biding his time · opens in a new tabSource 06 · KPGA (Korean) · Wyndham Championship win · opens in a new tab Only the year is confirmed.Won the Web.com Tour Stonebrae Classic in July.
Source 06 · KPGA (Korean) · Wyndham Championship win · opens in a new tabSource 07 · Financial News (Korean) · RSM Classic, first round · opens in a new tabSource 08 · Asia Economy (Korean) · Prospects for 2016 · opens in a new tab The articles give no day, so only the month is shown.Finished 10th on the Web.com Tour money list and secured a PGA Tour card for the 2015-16 season. He was runner-up at the News Sentinel Open in August.
Source 08 · Asia Economy (Korean) · Prospects for 2016 · opens in a new tabSource 07 · Financial News (Korean) · RSM Classic, first round · opens in a new tab The articles give no day, so only the month is shown.Back on the PGA Tour, he finished fourth at the Sony Open in Hawaii early in the season, shooting in the 60s all four days. He placed ninth at the CareerBuilder Challenge that followed, for back-to-back top 10s.
Source 06 · KPGA (Korean) · Wyndham Championship win · opens in a new tab The tournament dates are not confirmed in articles.Finished second at the Barbasol Championship.
Source 06 · KPGA (Korean) · Wyndham Championship win · opens in a new tab Based on the phrase “last month” in the Aug. 22, 2016 article; the day is not confirmed.Won at 21 under, 259, five shots ahead of Luke Donald. At 21 years 2 months he was then the youngest Korean to win on the PGA Tour, and the fifth Korean winner.
Source 06 · KPGA (Korean) · Wyndham Championship win · opens in a new tabSource 29 · Yonhap News Agency (Korean) · Youngest Players Championship winner · opens in a new tabSource 31 · ESPN (Associated Press) · Si Woo Kim ties Wyndham scoring mark, claims first PGA Tour title · opens in a new tab The date is Korea time.Won The Players Championship for his second PGA Tour win, with prize money of $1.89 million. He broke the tournament record for the youngest winner (23), set by Adam Scott in 2004, and was the second Asian winner after K. J. Choi in 2011. Mania Report writes that he made his name with this win, Electronic Times that he rose at once to the ranks of the world’s stars, and Newspim that he rose at once to the ranks of the PGA stars.
After the Players win, back pain led to a missed cut and a withdrawal, and he then tied for 13th at the U.S. Open, the second major of the season.
Source 10 · Mania Report (Korean) · Hunting for big-event wins · opens in a new tabSource 09 · Yonhap News Agency (Korean) · Donation after the Players win · opens in a new tab The day is not confirmed in articles.Played for the International team. His loss to Daniel Berger on the last day gave the U.S. the points needed to win; the final score was 19-11.
Source 13 · Yonhap News Agency (Korean) · Seventh straight U.S. Presidents Cup win · opens in a new tab The date is Korea time.Won for the third time at 23 under, 265. Yonhap writes that he was seen to have regained the form of his Players Championship win four years earlier.
Source 15 · Edaily (Korean) · American Express win · opens in a new tabSource 14 · Yonhap News Agency (Korean) · Kim Si-woo revived · opens in a new tab The date is Korea time.Chosen as one of six captain’s picks for the International team, along with Lee Kyoung-hoon. It was his second Presidents Cup, after 2017.
Source 16 · Bridge Economy (Korean) · Presidents Cup captain’s picks · opens in a new tab The date is U.S. time.Held a wedding in Seoul with Oh Ji-hyun, who has seven KLPGA Tour wins.
Source 17 · Sports Kyunghyang (Korean) · Kim Si-woo and Oh Ji-hyun marry · opens in a new tabCame from three shots back in fifth place after three rounds to win for the fourth time. The winner’s prize was $1,422,000.
Source 18 · Yonhap News Agency (Korean) · Sony Open win · opens in a new tab The date is Korea time.Won gold in the men’s team golf event on a team with Im Sung-jae, Cho Woo-young and Jang Yu-bin.
Source 19 · Yonhap News Agency (Korean) · Asian Games golf team gold · opens in a new tabTied for fifth at 8 under, 280, his best finish of that season. He fell two places short of the Tour Championship, the playoff finale.
Source 20 · Star News (Korean) · BMW Championship · opens in a new tab The date is Korea time.Tied for eighth at the PGA Championship, a major.
Source 24 · News1 (Korean) · Tied for sixth at the Open · opens in a new tab Based on the phrase “last year” in the News1 article of July 2026; the tournament date is not confirmed.Finished alone in third at the DP World Tour’s Crown Australian Open at 13 under, 271. The result earned him a place in the 2026 Open Championship.
Source 21 · Golf Hankook (Korean) · Third at the Australian Open, with a place in the Open · opens in a new tab The date is local time.Finished second at the Farmers Insurance Open.
Source 25 · Daily Sports Hankook (Korean) · Playoff runner-up, world No. 13 · opens in a new tab The day is not confirmed in articles.Finished second at 27 under, 257. Winner Wyndham Clark shot 60 on the last day alone and finished at 30 under.
Source 22 · JoongAng Ilbo (Korean) · Runner-up at the Byron Nelson · opens in a new tabSource 23 · The Fact (Korean) · Runner-up behind Clark · opens in a new tab The date is Korea time. One article gives the 26th, but its timestamp and the other article give the 25th.Tied for sixth at the 154th Open Championship at 6 under, 274. News1 calls it his best major result in its headline.
Source 24 · News1 (Korean) · Tied for sixth at the Open · opens in a new tab The date is Korea time.Finished alone in second at 9 under, 271 in the first playoff event. His world ranking rose to 13th, his career best at the time.
Source 25 · Daily Sports Hankook (Korean) · Playoff runner-up, world No. 13 · opens in a new tab The date is the 17th (Korea time), when the ranking was published. The day the tournament ended is not confirmed in articles.Finished tied for 14th at the Tour Championship. His season earnings of $10.27 million made him the first Korean player to pass $10 million in a season, and his 11 top-10 finishes made him the first Korean player to reach 10 or more.
Source 26 · Yonhap News Agency (Korean) · Kim Si-woo’s earnings record · opens in a new tab The date is Korea time.Played for the International team and won three team matches with Tom Kim. He lost his singles match on the last day, and the team lost 13-17.
Source 27 · Edaily (Korean) · Presidents Cup final · opens in a new tabSource 28 · News1 (Korean) · International team’s comeback loss · opens in a new tab The date is Korea time.END OF SELECTED RECORDSSelected records, 2012–2026 · not a complete list of work. “Key moment” is an editorial label, not a measure of success.
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Sports · South Korea
Jun 28, 1995 —
Ages are counted from the birth year 1995: the year of the event minus 1995, birthdays aside. “Key moment” labels and the connecting story are AgeTrail's editorial reading.
Fact-checked: 2026.10.05 · An independent archive, not affiliated with the person or their agency.