Ken Onishi: Ranking, Schedule & Stats
Ken Onishi is a professional tennis player from Japan, born 18 February 1996.
This page tracks Ken Onishi'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 season2026Onishi has won 3 of the last 12 first sets
Ratings & strengths
Umpiry ratings · updated dailySurface performanceSurfaces
CareerMost matches across the career came on hard: 3–9.
Recent results
Last 5Beyond today · rivals & careerBeyond today
Rivals
Most meetings
Most-played rivals. The record is Onishi's wins–losses across all matches we have, qualifying excluded.
Season
Completed seasonResults
Season breakdown
2019 · by level, surface, sets2019Career
Career overview
More career statistics
Career serve & return
Absolute totals across the 12 matches we have on record. Green is Onishi, grey is the same stat by the players they faced.
Aces
| Onishi | 115 |
|---|---|
| Opponents | 329 |
Double faults
| Onishi | 220 |
|---|---|
| Opponents | 370 |
1st serve in
| Onishi | 69% 5,622 / 8,169 |
|---|---|
| Opponents | 61% 4,970 / 8,083 |
1st-serve points won
| Onishi | 60% 3,382 / 5,622 |
|---|---|
| Opponents | 66% 3,273 / 4,970 |
Break points converted
| Onishi | 47% 366 / 776 |
|---|---|
| Opponents | 46% 434 / 953 |
Break points saved
| Onishi | 54% 519 / 953 |
|---|---|
| Opponents | 53% 410 / 776 |
1st-serve points won by season
| Season | Onishi | Opponents |
|---|---|---|
| 2019 | 53% | 67% |
| 2018 | 64% | 66% |
| 2016 | 64% | 69% |
| Career | 61% | 68% |
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 |
|---|---|---|---|
| Challenger | 1–5 | 17% | 0 |
| ITF / Futures | 39–73 | 35% | 0 |
Challenger and ITF matches are shown in grey and are not part of the tour-level total.
Record at one tournament
Every edition entered: year, best round reached, wins and losses. Most recent first.
Kobe CH · Editions 4 · Record 1–4 · Titles 0
Tournament page →| Year | Best round | W | L |
|---|---|---|---|
| 2019 | R32 | 0 | 1 |
| 2017 | R32 | 0 | 1 |
| 2016 | R16 | 1 | 1 |
| 2015 | R32 | 0 | 1 |
More on Umpiry · discovery
Frequently asked · Ken OnishiFrequently asked
When was Ken Onishi born?
Ken Onishi was born on 18 February 1996 (30 years old).
Where is Ken Onishi from?
Ken Onishi is from Japan.