- Born
- 1993-08-15 in Busan, South Korea, South Korea
- Hand
- Right
- Backhand
- 2 Hands
- Height
- 183 cm
- Weight
- 80 kg
- Coach
- nan
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JiSung Nam
JiSung Nam has found the Tour difficult, recording 3–6 across 9 matches (33.3%). The numbers point to a player still building their Tour presence — a key area of opportunity going forward.
| Date | Tournament | Srf | Rd | Wrk | Winner | Lrk | Loser | Score |
|---|---|---|---|---|---|---|---|---|
| 2022-09-26 | Seoul | Hard | R32 | 117 | - | 7-6(3) 6-4 | ||
| 2022-03-04 | Davis Cup QLS R1: AUT vs KOR | Hard | RR | 143 | - | 6-1 6-4 | ||
| 2021-09-17 | Davis Cup WG1 R1: KOR vs NZL | Grass | RR | - | - | 6-2 6-2 | ||
| 2021-02-01 | Great Ocean Road Open | Hard | R64 | 797 | 273 | 7-6(4) 7-5 | ||
| 2021-01-04 | Delray Beach | Hard | R32 | 52 | 268 | 6-1 6-4 | ||
| 2020-03-06 | Davis Cup G2 ITA vs KOR | Clay | RR | 79 | 238 | 6-3 7-5 | ||
| 2019-09-14 | Davis Cup G1 R1: CHN vs KOR | Hard | RR | 301 | 210 | 7-6(1) 7-6(0) | ||
| 2015-03-06 | Davis Cup G1 R1: THA vs KOR | Hard | RR | 1009 | 487 | 6-4 6-3 | ||
| 2013-02-01 | Davis Cup G1 R1: IND vs KOR | Hard | RR | 484 | 537 | 6-2 6-4 |