19–16Win–Loss
54.3%Win %
0Titles
| Surface | W | L | % |
|---|---|---|---|
| Hard | 17 | 15 | 53.1% |
| Grass | 2 | 0 | 100.0% |
| Carpet | 0 | 1 | 0.0% |
Season by season
| Year | W | L | Titles | % |
|---|---|---|---|---|
| 2011 | 3 | 2 | 0 | 60.0% |
| 2010 | 5 | 7 | 0 | 41.7% |
| 2009 | 1 | 1 | 0 | 50.0% |
| 2008 | 0 | 1 | 0 | 0.0% |
| 2004 | 2 | 3 | 0 | 40.0% |
| 2003 | 7 | 0 | 1 | 100.0% |
| 2002 | 1 | 1 | 0 | 50.0% |
| 2001 | 0 | 1 | 0 | 0.0% |
Matches
| Date | Tournament | Round | W/L | Opponent | Opp. rank | Score |
|---|---|---|---|---|---|---|
| 2011-10-17 | Seoul CH | R32 | L | Toshihide Matsui | 507 | 6-4 6-0 |
| 2011-09-16 | Davis Cup G2 R3: KOR vs THA | RR | W | Kittipong Wachiramanowong | 511 | 6-2 6-3 7-5 |
| 2011-07-25 | Wuhai CH | R16 | L | Danai Udomchoke | 220 | 6-4 6-2 |
| 2011-07-25 | Wuhai CH | R32 | W | Woong Sun Jun | 460 | 6-2 6-3 |
| 2011-07-08 | Davis Cup G2 R2: KOR vs PAK | RR | W | Yasir Khan | 1473 | 6-0 6-0 |
| 2010-09-13 | Bangkok CH | R32 | L | Yuichi Sugita | 222 | 6-4 RET |
| 2010-08-09 | Binghamton CH | R32 | L | Adam El Mihdawy | 442 | 7-6 RET |
| 2010-08-02 | Beijing CH | R16 | L | Di Wu | 447 | 6-3 4-6 7-6(4) |
| 2010-08-02 | Beijing CH | R32 | W | Sadik Kadir | 457 | 5-7 6-4 6-2 |
| 2010-07-09 | Davis Cup G1 PO: KOR vs UZB | RR | L | Farrukh Dustov | 547 | 6-7(6) 7-5 6-3 6-3 |
| 2010-05-17 | Fergana CH | SF | L | Evgeny Kirillov | 286 | 7-5 6-0 |
| 2010-05-17 | Fergana CH | QF | W | Mao Xin Gong | 537 | 6-4 6-1 |
| 2010-05-17 | Fergana CH | R16 | W | Yong Kyu Lim | 334 | 6-3 1-1 RET |
| 2010-05-17 | Fergana CH | R32 | W | Woong Sun Jun | 410 | 7-6(8) 6-3 |
| 2010-05-10 | Busan CH | R16 | L | Pierre Ludovic Duclos | 343 | 6-2 6-4 |
| 2010-05-10 | Busan CH | R32 | W | Rainer Schuettler | 74 | 6-4 6-2 |
| 2010-03-08 | Kyoto CH | R32 | L | Philipp Oswald | 244 | 6-0 6-4 |
| 2009-11-02 | Chuncheon CH | R16 | L | Tobias Kamke | 244 | 6-1 6-7(9) 6-0 |
| 2009-11-02 | Chuncheon CH | R32 | W | Hiroki Moriya | 454 | 6-4 3-6 6-3 |
| 2008-04-14 | Busan CH | R32 | L | Rameez Junaid | 330 | 6-4 3-6 6-3 |
| 2004-09-24 | Davis Cup G2 F: CHN vs KOR | RR | L | Ben Qiang Zhu | 593 | 5-7 6-7(3) 6-1 7-5 6-3 |
| 2004-09-24 | Davis Cup G2 F: CHN vs KOR | RR | L | Yu Jr Wang | 318 | 7-6(8) 3-6 4-6 6-3 6-2 |
| 2004-04-09 | Davis Cup G2 R2: KOR vs LIB | RR | W | Will Farah Lebar | – | 6-2 6-4 |
| 2004-04-09 | Davis Cup G2 R2: KOR vs LIB | RR | W | Patrick Chucri | 1110 | 7-6(5) 7-6(4) 6-1 |
| 2004-03-29 | Busan CH | R32 | L | Yen Hsun Lu | 129 | 4-6 6-4 6-3 |
| 2003-09-19 | Davis Cup G1 PO: PAK vs KOR | RR | W | Aisam Ul Haq Qureshi | 486 | 6-7(4) 7-6(5) 6-7(2) 7-6(5) 6-4 |
| 2003-09-19 | Davis Cup G1 PO: PAK vs KOR | RR | W | Aqeel Khan | – | 7-6(17) 4-6 6-3 7-6(8) |
| 2003-06-09 | Busan CH | F | W | Tasuku Iwami | 350 | 6-3 4-1 RET |
| 2003-06-09 | Busan CH | SF | W | Gouichi Motomura | 307 | 6-3 6-2 |
| 2003-06-09 | Busan CH | QF | W | Doug Bohaboy | 269 | 6-4 3-6 7-6(1) |
| 2003-06-09 | Busan CH | R16 | W | Takahiro Terachi | 228 | 6-4 3-6 7-6(1) |
| 2003-06-09 | Busan CH | R32 | W | Kentaro Masuda | 501 | 6-3 6-4 |
| 2002-10-21 | Seoul CH | R16 | L | Werner Eschauer | 204 | 6-2 6-4 |
| 2002-10-21 | Seoul CH | R32 | W | Kyu Tae Im | 617 | 6-2 6-3 |
| 2001-10-22 | Seoul CH | R32 | L | Mario Ancic | 385 | 6-3 6-3 |
Data: Jeff Sackmann / Tennis Abstract — CC BY-NC-SA 4.0