Dayeon Back: Ranking, Schedule & Stats
Dayeon Back is a professional tennis player from South Korea, born 24 January 2002. Back competes on the WTA Tour. Back was born in Daejeon.
This page tracks Dayeon Back'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 season2026Back has won 4 of the last 9 matches
Ratings & strengths
Umpiry ratings · updated dailyHow a player performs in the biggest moments, across 105 matches in our records. About
Surface performanceSurfaces
2026 seasonLast 12 monthsCareerRanking & projection
WTA ranking · not EloWTA · not EloRecent results
Last 5Beyond today · rivals & careerBeyond today
Rivals
Most meetings
Most-played rivals. The record is Back's wins–losses across all matches we have, qualifying excluded.
Season
Current seasonResults
Season breakdown
2026 · by level, surface, opponent, sets2026Career
Career overview
More career statistics
Career serve & return
Absolute totals across the 13 matches we have on record. Green is Back, grey is the same stat by the players they faced.
Aces
| Back | 185 |
|---|---|
| Opponents | 163 |
Double faults
| Back | 537 |
|---|---|
| Opponents | 1,003 |
1st serve in
| Back | 68% 13,622 / 19,983 |
|---|---|
| Opponents | 66% 13,174 / 19,959 |
1st-serve points won
| Back | 60% 8,215 / 13,622 |
|---|---|
| Opponents | 55% 7,260 / 13,174 |
Break points converted
| Back | 51% 1,473 / 2,896 |
|---|---|
| Opponents | 48% 1,103 / 2,320 |
Break points saved
| Back | 52% 1,217 / 2,320 |
|---|---|
| Opponents | 49% 1,423 / 2,896 |
1st-serve points won by season
| Season | Back | Opponents |
|---|---|---|
| 2026 | 61% | 55% |
| 2025 | 62% | 57% |
| 2024 | 61% | 55% |
| 2023 | 61% | 55% |
| 2022 | 58% | 57% |
| 2021 | 56% | 59% |
| 2019 | 56% | 49% |
| Career | 60% | 56% |
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 |
|---|---|---|---|
| WTA 500 | 1–1 | 50% | 0 |
| Other tour level | 3–5 | 38% | — |
| Tour level | 4–6 | 40% | 0 |
| Challenger | 0–1 | 0% | 0 |
| ITF / Futures | 189–89 | 68% | 11 |
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 · 44–18 · W–L 71% · 62 matches
Round played
| Qualifying | 6–3 (67%) |
|---|---|
| R32 | 12–6 (67%) |
| R16 | 9–4 (69%) |
| SF | 5–2 (71%) |
| F | 3–2 (60%) |
Surface
| Hard | 33–10 (77%) |
|---|---|
| Hard (indoor) | 5–3 (63%) |
| Clay | 6–5 (55%) |
Tournament level
| Main tour | 1–1 (50%) |
|---|---|
| Challenger | 34–16 (68%) |
| ITF / Futures | 4–1 (80%) |
| Team cups | 5–0 (100%) |
Opponent ranked
| vs top 100 | 0–1 (0%) |
|---|
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 | 33–10 | 6–5 | · | 5–3 | 44–18 |
| 2025 | 44–24 | · | · | 4–2 | 48–26 |
| 2024 | 46–16 | 3–1 | · | 5–3 | 54–20 |
| 2023 | 43–15 | · | · | · | 43–15 |
| 2022 | 19–11 | · | · | · | 19–11 |
| 2021 | 2–3 | 5–4 | · | 0–1 | 7–8 |
| 2019 | 18–7 | · | · | · | 18–7 |
| 2018 | 3–2 | · | · | 3–1 | 6–3 |
| 2017 | 4–3 | · | · | · | 4–3 |
| Career | 212–91 70% | 14–10 58% | · | 17–10 63% | 243–111 69% |
Record at one tournament
Every edition entered: year, best round reached, wins and losses. Most recent first.
W15 Yeongwol · Editions 5 · Record 28–4 · Titles 1
Tournament page →| Year | Best round | W | L |
|---|---|---|---|
| 2024 | Title | 10 | 0 |
| 2023 | Final | 9 | 1 |
| 2022 | Final | 6 | 1 |
| 2018 | Quarter-final | 2 | 1 |
| 2017 | Q2 | 1 | 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.
2022–2025 · 6 games summed across the range
| Stat | Value | Count | Rate |
|---|---|---|---|
| Aces | 4 | 61.5 service games | 0.1 / game |
| Double faults | 17 | 61.5 service games | 0.3 / game |
| 1st serve in | 252 | 422 serve points | 60% |
| 1st-serve points won | 140 | 252 1st serves in | 56% |
| 2nd-serve points won | 64 | 170 2nd serves | 38% |
| Service points won | 204 | 422 serve points | 48% |
| Return points lost | 182 | 431 return points | 42% |
| Break points saved | 28 | 61 faced | 46% |
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 · Dayeon BackFrequently asked
When was Dayeon Back born?
Dayeon Back was born on 24 January 2002 (24 years old).
Where is Dayeon Back from?
Dayeon Back is from South Korea, born in Daejeon on 24 January 2002.
Cite this
Dayeon Back is ranked No. 253 in the WTA singles rankings with 293 points. Umpiry, "Dayeon Back: Ranking, Schedule & Stats", https://umpiry.com/players/dayeon-back-kor?utm_source=cite (as of 23 September 2026).