Ji Sung Nam: Ranking, Schedule & Stats
Ji Sung Nam is a professional tennis player from South Korea, born 15 August 1993. Nam competes on the ATP Tour and plays right-handed. Nam stands 183 cm (6 ft 0 in) tall. Nam was born in Busan and is based in Seoul.
This page tracks Ji Sung Nam's upcoming schedule, latest results, recent form and surface record, with each match linking through to a detailed head-to-head and pre-match analysis. Scores update live as matches are played.
Current form
2026 season2026Nam has won 17 of the last 30 first sets
Nam has won 3 of 7 deciding sets
Nam has won 4 of the last 10 matches
Ratings & strengths
Umpiry ratings · updated dailyHow a player performs in the biggest moments, across 184 matches in our records. About
Surface performanceSurfaces
2026 seasonLast 12 monthsCareerMost matches this season came on hard: 6–6.
Most matches over the last 12 months came on hard: 12–10.
Hard is the clear edge: 87 losses in 176 matches across the career.
Ranking & projection
ATP ranking · not EloATP · not EloRecent results
Last 5Beyond today · rivals & careerBeyond today
Rivals
Most meetings
Most-played rivals. The record is Nam's wins–losses across all matches we have, qualifying excluded.
Season
Current seasonResults
Season breakdown
2026 · by level, surface, opponent, sets2026Career
Career overview
Titles & finals
2 finals · 0 titles · 2 lostNo ATP tour-level final on record for Ji Sung Nam — either they have not reached one, or we do not have it in our data.
More career statistics
Career serve & return
Absolute totals across the 195 matches we have on record. Green is Nam, grey is the same stat by the players they faced.
Aces
| Nam | 1,087 |
|---|---|
| Opponents | 999 |
Double faults
| Nam | 1,013 |
|---|---|
| Opponents | 1,035 |
1st serve in
| Nam | 65% 15,048 / 23,260 |
|---|---|
| Opponents | 61% 14,982 / 24,453 |
1st-serve points won
| Nam | 67% 10,152 / 15,048 |
|---|---|
| Opponents | 65% 9,685 / 14,982 |
Break points converted
| Nam | 44% 1,213 / 2,757 |
|---|---|
| Opponents | 43% 957 / 2,230 |
Break points saved
| Nam | 57% 1,273 / 2,230 |
|---|---|
| Opponents | 56% 1,544 / 2,757 |
1st-serve points won by season
| Season | Nam | Opponents |
|---|---|---|
| 2026 | 68% | 71% |
| 2025 | 68% | 70% |
| 2024 | 68% | 66% |
| 2023 | 68% | 67% |
| 2022 | 68% | 68% |
| 2021 | 70% | 68% |
| 2020 | 71% | 65% |
| 2019 | 70% | 65% |
| 2018 | 68% | 66% |
| 2016 | 67% | 79% |
| 2015 | 67% | 66% |
| 2014 | 65% | 69% |
| Career | 68% | 67% |
Counted from the match statistics we hold, season by season — the cards above are career totals from our data provider, so the two can differ by a few tenths. Seasons with fewer than three matches on record are left out.
Career win–loss by level
| Level | W–L | Win % | Titles |
|---|---|---|---|
| ATP 250 | 0–3 | 0% | 0 |
| Other tour level | 3–2 | 60% | — |
| Tour level | 3–5 | 38% | 0 |
| Challenger | 47–52 | 47% | 0 |
| ITF / Futures | 91–71 | 56% | 2 |
Challenger and ITF matches are shown in grey and are not part of the tour-level total.
Season breakdown
Wins and losses in one season, split by round reached, surface, tournament level and opponent ranking band.
2026 season · 6–8 · W–L 43% · 14 matches
Round played
| Qualifying | 4–7 (36%) |
|---|---|
| R32 | 1–1 (50%) |
| R16 | 1–0 (100%) |
Surface
| Hard | 6–6 (50%) |
|---|---|
| Clay | 0–2 (0%) |
Tournament level
| Challenger | 6–8 (43%) |
|---|
Rounds are the round each match was played in, not a ladder: a player enters a 32-draw straight in R32, and team events (United Cup, Davis Cup) are not played through a draw at all — those have their own row. Ranking bands use the opponent's ranking on match day and are cumulative: top 100 includes top 10.
Surface record by season
Each cell is one season on one surface: the number is wins–losses, the colour is the win rate. Carpet is counted as indoor hard.
| Season | Hard | Clay | Grass | I.hard | Total |
|---|---|---|---|---|---|
| 2026 | 4–6 | 0–2 | · | · | 4–8 |
| 2025 | 18–12 | 0–1 | · | 5–3 | 23–16 |
| 2024 | 12–10 | 2–4 | 0–1 | 0–1 | 14–16 |
| 2023 | 13–15 | 2–4 | · | 0–1 | 15–20 |
| 2022 | 24–13 | 2–4 | · | 0–2 | 26–19 |
| 2021 | 2–6 | · | 1–0 | 1–1 | 4–7 |
| 2020 | 1–2 | 0–1 | · | 2–3 | 3–6 |
| 2019 | 32–20 | 1–1 | · | 6–2 | 39–23 |
| 2018 | 37–10 | 3–2 | · | 0–1 | 40–13 |
| 2017 | 7–2 | · | · | · | 7–2 |
| 2016 | 14–7 | 9–2 | · | · | 23–9 |
| 2015 | 16–15 | 2–2 | · | · | 18–17 |
| 2014 | 30–18 | 2–3 | · | 3–1 | 35–22 |
| 2013 | 26–21 | 0–1 | · | 3–2 | 29–24 |
| 2012 | 20–20 | 5–0 | 0–1 | 2–4 | 27–25 |
| 2011 | 2–10 | 0–3 | · | 3–2 | 5–15 |
| 2010 | 2–5 | · | · | 0–1 | 2–6 |
| 2009 | 1–1 | · | · | · | 1–1 |
| Career | 261–193 57% | 28–30 48% | 1–2 33% | 25–24 51% | 315–249 56% |
Record at one tournament
Every edition entered: year, best round reached, wins and losses. Most recent first.
Gwangju CH · Editions 6 · Record 12–6 · Titles 0
Tournament page →| Year | Best round | W | L |
|---|---|---|---|
| 2025 | Qualifying | 0 | 1 |
| 2024 | R16 | 1 | 1 |
| 2023 | Qualifying | 1 | 1 |
| 2022 | QF | 3 | 1 |
| 2019 | R32 | 1 | 1 |
| 2018 | F | 6 | 1 |
Season statistics
Each stat is stored as a value–count pair, so seasons can be added together and the rate is always value ÷ count.
2019–2022 · 7 games summed across the range
| Stat | Value | Count | Rate |
|---|---|---|---|
| Aces | 35 | 72.5 service games | 0.5 / game |
| Double faults | 20 | 72.5 service games | 0.3 / game |
| 1st serve in | 276 | 453 serve points | 61% |
| 1st-serve points won | 198 | 276 1st serves in | 72% |
| 2nd-serve points won | 88 | 177 2nd serves | 50% |
| Service points won | 286 | 453 serve points | 63% |
| Return points lost | 148 | 444 return points | 33% |
| Break points saved | 31 | 48 faced | 65% |
Value is what happened (aces hit, points won), count is how often it could (service games, points played). Adding seasons adds both — the rate is never averaged from percentages.
More on Umpiry · discovery
More players from South Korea
All →Frequently asked · Ji Sung NamFrequently asked
How tall is Ji Sung Nam?
Ji Sung Nam is 183 cm (6 ft 0 in) tall.
When was Ji Sung Nam born?
Ji Sung Nam was born on 15 August 1993 (33 years old).
Where is Ji Sung Nam from?
Ji Sung Nam is from South Korea, born in Busan on 15 August 1993.
Is Ji Sung Nam right or left-handed?
Ji Sung Nam plays right-handed.
How good is Ji Sung Nam on hard?
On hard, Ji Sung Nam has compiled a 89-87 record (51% wins).
Cite this
Ji Sung Nam is ranked No. 827 in the ATP singles rankings with 33 points. Umpiry, "Ji Sung Nam: Ranking, Schedule & Stats", https://umpiry.com/players/ji-sung-nam-kor?utm_source=cite (as of 11 September 2026).