13–8Win–Loss
61.9%Win %
0Titles
| Surface | W | L | % |
|---|---|---|---|
| Hard | 12 | 6 | 66.7% |
| Carpet | 0 | 2 | 0.0% |
| Clay | 1 | 0 | 100.0% |
Season by season
| Year | W | L | Titles | % |
|---|---|---|---|---|
| 2006 | 2 | 2 | 0 | 50.0% |
| 2005 | 2 | 1 | 0 | 66.7% |
| 2004 | 4 | 1 | 0 | 80.0% |
| 2003 | 3 | 3 | 0 | 50.0% |
| 2002 | 2 | 1 | 0 | 66.7% |
Ranking history
Matches
| Date | Tournament | Round | W/L | Opponent | Opp. rank | Score |
|---|---|---|---|---|---|---|
| 2006-11-06 | Busan CH | R32 | L | Alex Bogomolov Jr | 228 | 6-4 6-4 |
| 2006-05-29 | Busan CH | R16 | L | Robert Kendrick | 247 | 6-3 1-6 6-4 |
| 2006-05-29 | Busan CH | R32 | W | Phillip King | 358 | 6-0 6-1 |
| 2006-02-10 | Davis Cup G1 R1: KOR vs IND | RR | W | Rohan Bopanna | 232 | 3-6 6-2 6-3 6-4 |
| 2005-05-23 | Busan CH | QF | L | Paul Goldstein | 129 | 7-5 6-0 |
| 2005-05-23 | Busan CH | R16 | W | Jean Michel Pequery | 244 | 6-3 6-4 |
| 2005-05-23 | Busan CH | R32 | W | Go Soeda | 421 | 6-3 4-0 RET |
| 2004-04-09 | Davis Cup G2 R2: KOR vs LIB | RR | W | Will Farah Lebar | – | 6-2 6-2 6-1 |
| 2004-03-29 | Busan CH | QF | L | Igor Kunitsyn | 243 | 6-1 6-2 |
| 2004-03-29 | Busan CH | R16 | W | Michihisa Onoda | 522 | 6-1 6-4 |
| 2004-03-29 | Busan CH | R32 | W | Jimmy Wang | 180 | 7-5 6-1 |
| 2004-02-06 | Davis Cup G2 R1: MAS vs KOR | RR | W | Yew Ming Si | 891 | 6-3 7-5 6-4 |
| 2003-06-09 | Busan CH | R16 | L | Kyu Tae Im | 518 | 4-6 6-3 6-1 |
| 2003-06-09 | Busan CH | R32 | W | Seung Hoon Lee | 1116 | 7-5 6-3 |
| 2003-04-04 | Davis Cup G1 PO: INA vs KOR | RR | W | Prima Simpatiaji | 905 | 7-5 7-6(2) |
| 2003-04-04 | Davis Cup G1 PO: INA vs KOR | RR | W | Peter Handoyo | 539 | 7-5 6-2 2-1 RET |
| 2003-02-07 | Davis Cup G1 R1: THA vs KOR | RR | L | Danai Udomchoke | 213 | 6-1 6-3 |
| 2003-02-07 | Davis Cup G1 R1: THA vs KOR | RR | L | Paradorn Srichaphan | 13 | 6-2 6-2 6-3 |
| 2002-09-20 | Davis Cup G1 PO: LIB vs KOR | RR | W | Karim Alayli | – | 6-2 6-1 6-3 |
| 2002-04-05 | Davis Cup G1 PO: UZB vs KOR | RR | L | Oleg Ogorodov | 145 | 6-7(2) 6-4 6-0 6-2 |
| 2002-04-05 | Davis Cup G1 PO: UZB vs KOR | RR | W | Vadim Kutsenko | 161 | 6-2 6-4 4-6 6-1 |