2009 U.S. Amateur: An Byeong-hun wins at Southern Hills Country Club
An Byeong-hun won the 2009 U.S. Amateur at Southern Hills Country Club in Tulsa, Oklahoma, beating Ben Martin 7 & 5 in the final.
Updated October 22, 2026
Walk this draw in the U.S. Amateur room.
- Edition
- 109th
- Dates
- August 24, 2009 to August 30, 2009
- Course
- Southern Hills Country Club, Tulsa, Oklahoma
- Stroke-play co-host
- Cedar Ridge Country Club, Broken Arrow, Okla.
- Format
- stroke-play qualifying (36 holes) + match play
- Champion
- An Byeong-hun · age 17 · South Korea · Bradenton Prep (high school)
- Champion's title
- 1st U.S. Amateur
- Runner-up
- Ben Martin · age 22
- Final
- 7 & 5
- Losing semifinalists
- Charlie Holland and Bhavik Patel
- Stroke-play medalist
- Tim Jackson (140)
- Defending champion
- Danny Lee · did not play (not in USGA stroke-play results)
- Entries
- 6,948
What happened at the 2009 U.S. Amateur
Final: An won the 15th, 16th and 17th holes of the morning round to go 3 up and beat Ben Martin 7 and 5, the largest final margin since 1999.
An, 17 years 11 months 13 days, broke Danny Lee's one-year-old record as the youngest champion; stroke-play medalist Tim Jackson, 50, was the oldest medalist in championship history.
, . An, 17 years 11 months 13 days, broke Danny Lee's one-year-old record as the youngest champion; stroke-play medalist Tim Jackson, 50, was the oldest medalist in championship history.
The draw
Every match is recorded through the round of 64.
The final, 2009 U.S. Amateur
| Winner | Beaten | Result | |
|---|---|---|---|
| An Byeong-hun | def. | Ben Martin | 7 & 5 |
Semifinals, 2009 U.S. Amateur
| Winner | Beaten | Result | |
|---|---|---|---|
| Ben Martin | def. | Charlie Holland | 5 & 4 |
| An Byeong-hun | def. | Bhavik Patel | 3 & 2 |
Quarterfinals, 2009 U.S. Amateur
| Winner | Beaten | Result | |
|---|---|---|---|
| Charlie Holland | def. | Peter Uihlein | won on 19th hole |
| Ben Martin | def. | David Lingmerth | 2 & 1 |
| Bhavik Patel | def. | Phillip Mollica | 1 up |
| An Byeong-hun | def. | Steve Ziegler | won on 21st hole |
Round of 16, 2009 U.S. Amateur
| Winner | Beaten | Result | |
|---|---|---|---|
| Charlie Holland | def. | Christopher Ross | 2 & 1 |
| Peter Uihlein | def. | Connor Arendell | 2 & 1 |
| Ben Martin | def. | Nico Geyger | 2 & 1 |
| David Lingmerth | def. | Cameron Tringale | 4 & 2 |
| Phillip Mollica | def. | Mark Anderson | 1 up |
| Bhavik Patel | def. | Marcel Puyat | 1 up |
| Steve Ziegler | def. | Daniel Woltman | won on 22nd hole |
| An Byeong-hun | def. | Mike Van Sickle | won on 20th hole |
Round of 32, 2009 U.S. Amateur
| Winner | Beaten | Result | |
|---|---|---|---|
| Charlie Holland | def. | Tim Jackson | 1 up |
| Christopher Ross | def. | Travis Woolf | 2 & 1 |
| Peter Uihlein | def. | Connor Driscoll | 2 & 1 |
| Connor Arendell | def. | Dodge Kemmer | 3 & 2 |
| Ben Martin | def. | Chris Ward | won on 19th hole |
| Nico Geyger | def. | Matt Smith | 3 & 2 |
| David Lingmerth | def. | Bud Cauley | 2 & 1 |
| Cameron Tringale | def. | Bronson Burgoon | 1 up |
| Mark Anderson | def. | Zach Barlow | 1 up |
| Phillip Mollica | def. | Cameron Wilson | 1 up |
| Marcel Puyat | def. | Scott Langley | 4 & 3 |
| Bhavik Patel | def. | Brad Revell | 2 up |
| Steve Ziegler | def. | Will Strickler | 1 up |
| Daniel Woltman | def. | Glenn Northcutt | 7 & 5 |
| Mike Van Sickle | def. | Trent Whitekiller | 6 & 5 |
| An Byeong-hun | def. | Brett Kanda | 4 & 3 |
Round of 64, 2009 U.S. Amateur
| Winner | Beaten | Result | |
|---|---|---|---|
| Tim Jackson | def. | John Kostis | 5 & 4 |
| Charlie Holland | def. | Morgan Hoffmann | won on 19th hole |
| Christopher Ross | def. | Corey Nagy | 5 & 4 |
| Travis Woolf | def. | Brady Johnson | 4 & 3 |
| Peter Uihlein | def. | James Sacheck | won on 19th hole |
| Connor Driscoll | def. | Jonathan Randolph | 3 & 1 |
| Dodge Kemmer | def. | Eric Steger | 6 & 5 |
| Connor Arendell | def. | David Chung | 2 & 1 |
| Ben Martin | def. | Tyson Alexander | won on 21st hole |
| Chris Ward | def. | Brian Harman | won on 19th hole |
| Nico Geyger | def. | Derek Ernst | 1 up |
| Matt Smith | def. | Andrew Funk | 4 & 3 |
| Bud Cauley | def. | Rickie Fowler | 3 & 1 |
| David Lingmerth | def. | Scott Strohmeyer | 3 & 2 |
| Cameron Tringale | def. | John Peterson | 2 up |
| Bronson Burgoon | def. | Joe Juszczyk | 5 & 4 |
| Mark Anderson | def. | Justin Bardgett | 2 up |
| Zach Barlow | def. | Nathan Smith | 2 up |
| Phillip Mollica | def. | Travis Ross | 2 up |
| Cameron Wilson | def. | Matt Thompson | won on 19th hole |
| Scott Langley | def. | David Sheman | 2 & 1 |
| Marcel Puyat | def. | Fielding Brewbaker | 3 & 1 |
| Brad Revell | def. | Matthew Broome | won on 19th hole |
| Bhavik Patel | def. | Patrick Rada | 3 & 2 |
| Will Strickler | def. | Brenton Flynn | 2 & 1 |
| Steve Ziegler | def. | Jackson Beindorf | 5 & 3 |
| Daniel Woltman | def. | Talor Gooch | 3 & 2 |
| Glenn Northcutt | def. | Jonathan Fly | 2 & 1 |
| Trent Whitekiller | def. | Wesley Bryan | won on 19th hole |
| Mike Van Sickle | def. | John Murphy | 6 & 4 |
| Brett Kanda | def. | Kevin Tway | 1 up |
| An Byeong-hun | def. | Alex Moon | 2 & 1 |
How this was built
Every value is shown as recorded in GNN's U.S. Amateur data set (research collected through October 20, 2026). "unknown" means no source confirmed it; nothing is estimated. Where sources disagree, the USGA's own record is used.
Data: us-amateur.json.