J. Sun: Ranking, Schedule & Stats
J. Sun is a professional tennis player from China, born 12 October 2006.
This page tracks J. Sun'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.
Ratings & strengths
Umpiry ratings · updated dailyBeyond today · rivals & careerBeyond today
Results
Career
More career statistics
Career win–loss by level
| Level | W–L | Win % | Titles |
|---|---|---|---|
| ITF / Futures | 2–6 | 25% | 0 |
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 · 21–21 · W–L 50% · 42 matches
Round played
| Qualifying | 4–6 (40%) |
|---|---|
| R64 | 0–1 (0%) |
| R32 | 2–2 (50%) |
| R16 | 0–2 (0%) |
Surface
| Hard | 15–13 (54%) |
|---|---|
| Hard (indoor) | 6–7 (46%) |
| Clay | 0–1 (0%) |
Tournament level
| Challenger | 2–7 (22%) |
|---|---|
| ITF / Futures | 19–14 (58%) |
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 | 16–14 | 0–1 | · | 5–5 | 21–20 |
| 2025 | 5–11 | · | · | 3–7 | 8–18 |
| 2024 | 5–6 | · | · | · | 5–6 |
| 2023 | 3–1 | · | · | · | 3–1 |
| Career | 29–32 48% | 0–1 0% | · | 8–12 40% | 37–45 45% |
Season statistics
Each stat is stored as a value–count pair, so seasons can be added together and the rate is always value ÷ count.
2026 season · 1 games summed across the range
| Stat | Value | Count | Rate |
|---|---|---|---|
| Aces | 0 | 1 service games | 0.0 / game |
| Double faults | 3 | 1 service games | 3.0 / game |
| 1st serve in | 34 | 52 serve points | 65% |
| 1st-serve points won | 25 | 34 1st serves in | 74% |
| Break points saved | 4 | 6 faced | 67% |
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
Frequently asked · J. SunFrequently asked
When was J. Sun born?
J. Sun was born on 12 October 2006 (20 years old).
Where is J. Sun from?
J. Sun is from China.