
Korea, Rep.
| Age | 32 (15-08-1993) |
| Country | |
| Birthplace | Busan, South Korea |
| Height | 183 |
| Weight | 80 |
| Plays | Right-Handed |
| Backhand | Two-Handed |
| Favorite Surface | |
| Coach | |
| Turned Pro | |
| Player Status | Active |
Hard
Clay
Grass
Indoor
All
| Aces / Game | 0.37 | 30 / 82 |
| DFs / Game | 0.26 | 21 / 82 |
| 1st Serve % | 56.6% | 284 / 502 |
| 1st Serve Win % | 66.2% | 188 / 284 |
| 2nd Serve Win % | 50.5% | 110 / 218 |
| Service Points Win % | 59.4% | 298 / 502 |
| Opponent Aces / Game | 0.41 | 34 / 82 |
| Opponent Double Faults / Game | 0.21 | 17 / 82 |
| Opponent 1st Serve % | 63.6% | 325 / 511 |
| 1st Return Win % | 29.5% | 96 / 325 |
| 2nd Return Win % | 48.9% | 91 / 186 |
| Return Points Win % | 36.6% | 187 / 511 |
| Break Points Saved Per Game | 0.34 | 28 / 82 |
| Break Points Faced Per Game | 0.63 | 52 / 82 |
| Break Points Save % | 53.8% | 28 / 52 |
| Service Hold % | 70.7% | 58 / 82 |
| Break Points Won Per Game | 0.23 | 19 / 82 |
| Opponent Break Points Per Game | 0.60 | 49 / 82 |
| BP Won % | 38.8% | 19 / 49 |
| Opp Hold % | 76.8% | 63 / 82 |
| Prostejov Challenger | ||||||
31 May 2026 Q1 | 6 4 6 4 | L | H2H 0-0 | |||
| Vicenza Challenger | ||||||
24 May 2026 Q1 | 7 5 6 4 | L | H2H 0-0 | |||
| Busan Challenger | ||||||
12 Apr 2026 Q1 | 6 3 6 2 | L | H2H 0-0 | |||
| Miyazaki Challenger | ||||||
31 Mar 2026 R1 | 6 4 6 2 | L | H2H 0-0 | |||
| year | All | hard | clay | indoor | grass |
| 2026 | 2-6 | 2-4 | 0-2 | 0-0 | 0-0 |
| 2025 | 23-16 | 18-12 | 0-1 | 5-3 | 0-0 |
| 2024 | 14-16 | 12-10 | 2-4 | 0-1 | 0-1 |
| 2023 | 15-20 | 13-15 | 2-4 | 0-1 | 0-0 |
| 2022 | 26-19 | 24-13 | 2-4 | 0-2 | 0-0 |
| 2021 | 4-7 | 2-6 | 0-0 | 1-1 | 1-0 |
| 2020 | 3-6 | 1-2 | 0-1 | 2-3 | 0-0 |
| 2019 | 39-23 | 32-20 | 1-1 | 6-2 | 0-0 |
| 2018 | 40-13 | 37-10 | 3-2 | 0-1 | 0-0 |
| 2017 | 7-2 | 7-2 | 0-0 | 0-0 | 0-0 |
| 2016 | 23-9 | 14-7 | 9-2 | 0-0 | 0-0 |
| 2015 | 18-17 | 16-15 | 2-2 | 0-0 | 0-0 |
| 2014 | 35-22 | 30-18 | 2-3 | 3-1 | 0-0 |
| 2013 | 29-24 | 26-21 | 0-1 | 3-2 | 0-0 |
| 2012 | 27-25 | 20-20 | 5-0 | 2-4 | 0-1 |
| 2011 | 5-15 | 2-10 | 0-3 | 3-2 | 0-0 |
| 2010 | 2-6 | 2-5 | 0-0 | 0-1 | 0-0 |
| 2009 | 1-1 | 1-1 | 0-0 | 0-0 | 0-0 |
| Grand Slam | 0.0% | 0 / 1 |
| Masters | 0.0% | 0 / 0 |
| Main Tour | 20.0% | 1 / 4 |
| Cups | 50.0% | 3 / 3 |
| Challengers | 49.1% | 114 / 118 |
| Futures | 61.7% | 195 / 121 |
| Vs No.1 | 0.0% | 0 / 0 |
| Vs Top.5 | 0.0% | 0 / 0 |
| Vs Top.10 | 0.0% | 0 / 0 |
| Vs Top.20 | 0.0% | 0 / 0 |
| Vs Top.50 | 0.0% | 0 / 0 |
| Vs Top.100 | 12.5% | 1 / 7 |
| Overall | 55.6% | 303 / 242 |
| Hard | 57.6% | 259 / 191 |
| Clay | 48.3% | 28 / 30 |
| Indoor | 44.1% | 15 / 19 |
| Grass | 33.3% | 1 / 2 |
| Final | 35.3% | 6 / 11 |
| Semi-Final | 48.6% | 17 / 18 |
| Quarter-Final | 53.0% | 35 / 31 |
| Third | 50.0% | 5 / 5 |
| Second | 64.2% | 68 / 38 |
| First | 54.6% | 101 / 84 |
| Qualifying Final | 58.1% | 25 / 18 |
| Qualifying R2 | 69.6% | 16 / 7 |
| Qualifying R1 | 53.6% | 37 / 32 |
Title
Finals
![]() Ji Sung Nam | Loss VIEW H2H | ![]() Dennis Novak | ||
![]() Ji Sung Nam | Loss VIEW H2H | ![]() Gianluca Mager | ||
![]() Ji Sung Nam | Loss VIEW H2H | ![]() Steve Johnson | ||
![]() Ji Sung Nam | Loss VIEW H2H | ![]() Warit Sornbutnark | ||
![]() Ji Sung Nam | Loss VIEW H2H | ![]() Dane Sweeny | ||
![]() Ji Sung Nam | Loss VIEW H2H | ![]() Tommy Paul | ||
![]() Ji Sung Nam | Wins VIEW H2H | ![]() Jose Statham | ||
![]() Ji Sung Nam | Wins VIEW H2H | ![]() Zhe Li | ||
![]() Ji Sung Nam | Wins VIEW H2H | ![]() Vijayant Malik | ||
![]() Ji Sung Nam | Draw VIEW H2H | ![]() Toshihide Matsui | ||
![]() Ji Sung Nam | Draw VIEW H2H | ![]() Sanchai Ratiwatana | ||
![]() Ji Sung Nam | Draw VIEW H2H | ![]() Teimuraz Gabashvili | ||
Fearnley Bonzi Prediction H2H (1-0)
Justo Gomez Prediction H2H (0-0)
Kovalik Galus Prediction H2H (0-0)
Mathes Zielinski Prediction H2H (0-0)
Gurri Jover Prediction H2H (0-2)
Ribecai Silva Prediction H2H (0-0)
Niccolo Baroni Branko Djuric Prediction H2H (0-0)