Korea, Rep.
| Age | 24 (24-01-2002) |
| Country | Korea, Rep. |
| Birthplace | |
| Height | |
| Weight | |
| Plays | Right-Handed |
| Backhand | |
| Favorite Surface |  Hard 65% |
| Coach | |
| Turned Pro | |
| Player Status | Active |
Match Stats
Hard
Clay
Grass
Indoor
All
Service Stats
| Aces / Game | 0.07 | 28 / 425 |
| DFs / Game | 0.21 | 90 / 425 |
| 1st Serve % | 67.7% | 1835 / 2711 |
| 1st Serve Win % | 63.5% | 1165 / 1835 |
| 2nd Serve Win % | 47.6% | 417 / 876 |
| Service Points Win % | 58.4% | 1582 / 2711 |
Return Stats
| Opponent Aces / Game | 0.04 | 18 / 425 |
| Opponent Double Faults / Game | 0.28 | 120 / 425 |
| Opponent 1st Serve % | 65.2% | 1772 / 2717 |
| 1st Return Win % | 46.2% | 818 / 1772 |
| 2nd Return Win % | 59.7% | 564 / 945 |
| Return Points Win % | 50.9% | 1382 / 2717 |
Break Points (Serve)
| Break Points Saved Per Game | 0.34 | 144 / 425 |
| Break Points Faced Per Game | 0.66 | 281 / 425 |
| Break Points Save % | 51.2% | 144 / 281 |
| Service Hold % | 67.8% | 288 / 425 |
Break Points (Rtn)
| Break Points Won Per Game | 0.51 | 219 / 425 |
| Opponent Break Points Per Game | 0.94 | 401 / 425 |
| BP Won % | 54.6% | 219 / 401 |
| Opp Hold % | 48.5% | 206 / 425 |
Dayeon Back Past Matches
 | W50 Darmstadt | |||||
16 Jul 2026 R2 |  | 6 3 7 6 | L |  | H2H 0-0 | |
15 Jul 2026 R1 | | 6 3 6 2 | W | | H2H 0-0 | |
 | W35 Taipei | |||||
26 Jun 2026 QF | | 6 4 7 6 | L | | H2H 0-1 | |
25 Jun 2026 R2 | | 6 3 7 6 | W | | H2H 0-0 | |
Dayeon Back Surface Summary
| year | All | hard | clay | indoor | grass |
| 2026 | 38-11 | 32-7 | 1-1 | 5-3 | 0-0 |
| 2025 | 48-26 | 44-24 | 0-0 | 4-2 | 0-0 |
| 2024 | 54-20 | 46-16 | 3-1 | 5-3 | 0-0 |
| 2023 | 43-15 | 43-15 | 0-0 | 0-0 | 0-0 |
| 2022 | 19-11 | 19-11 | 0-0 | 0-0 | 0-0 |
| 2021 | 7-8 | 2-3 | 5-4 | 0-1 | 0-0 |
| 2019 | 18-7 | 18-7 | 0-0 | 0-0 | 0-0 |
| 2018 | 6-3 | 3-2 | 0-0 | 3-1 | 0-0 |
| 2017 | 4-3 | 4-3 | 0-0 | 0-0 | 0-0 |
Dayeon Back Performance Breakdown
Tournament Level Breakdown
| Grand Slam | 0.0% | 0 / 0 |
| Masters | 0.0% | 0 / 0 |
| Main Tour | 42.9% | 3 / 4 |
| Cups | 76.9% | 10 / 3 |
| Challengers | 65.3% | 111 / 59 |
| Futures | 74.8% | 113 / 38 |
Opponent Rank Breakdown
| Vs No.1 | 0.0% | 0 / 0 |
| Vs Top.5 | 0.0% | 0 / 0 |
| Vs Top.10 | 0.0% | 0 / 0 |
| Vs Top.20 | 100.0% | 1 / 0 |
| Vs Top.50 | 33.3% | 1 / 2 |
| Vs Top.100 | 33.3% | 1 / 2 |
Surface Breakdown
| Overall | 69.5% | 228 / 100 |
| Hard | 70.6% | 211 / 88 |
| Clay | 60.0% | 9 / 6 |
| Indoor | 57.1% | 8 / 6 |
| Grass | 0.0% | 0 / 0 |
Round Breakdown
| Final | 60.0% | 12 / 8 |
| Semi-Final | 58.8% | 20 / 14 |
| Quarter-Final | 65.4% | 34 / 18 |
| Second | 69.3% | 52 / 23 |
| First | 73.5% | 75 / 27 |
| Qualifying Final | 70.6% | 12 / 5 |
| Qualifying R2 | 80.0% | 8 / 2 |
| Qualifying R1 | 77.8% | 14 / 4 |
Dayeon Back Titles/Finals/Semis
Title
Finals
Dayeon Back interesting Heads to Heads
 Dayeon Back | Loss VIEW H2H |  Kimberly Birrell | ||
Dayeon Back | Wins VIEW H2H |  Joanna Garland | ||
Dayeon Back | Wins VIEW H2H |  Ankita Raina | ||
Dayeon Back | Wins VIEW H2H |  Jelena Ostapenko | ||
Dayeon Back | Loss VIEW H2H |  Lulu Sun | ||
Dayeon Back | Wins VIEW H2H |  Sevil Yuldasheva | ||
Dayeon Back | Loss VIEW H2H |  Zarina Diyas | ||
Dayeon Back | Loss VIEW H2H |  Na-Lae Han | ||
Dayeon Back | Loss VIEW H2H |  Beatriz Haddad Maia | ||
Dayeon Back | Loss VIEW H2H |  Carol Zhao | ||
Dayeon Back | Wins VIEW H2H |  Wushuang Zheng | ||
Dayeon Back | Wins VIEW H2H |  Hong Yi Cody Wong | ||
Upcoming Tennis Predictions & Head to Heads
Sato Bedard Prediction H2H (0-0)
Bartunkova Yuan Prediction H2H (0-0)
Bizzari Cerchez Prediction H2H (0-0)
Moreno Kozakova Prediction H2H (0-0)
Gelber Nicholson Prediction H2H (0-0)
Lepchenko Avanesyan Prediction H2H (2-0)
Maria Malina Rosca Valeria Pezzoli Prediction H2H (0-0)
 ATP Rankings | |||
|---|---|---|---|
| 1 | 13450 PTS | ||
| 2 | 8480 PTS | ||
| 3 | 8160 PTS | ||
| 4 | 4740 PTS | ||
| 5 | 4110 PTS | ||
| 6 | 3770 PTS | ||
| 7 | 3760 PTS | ||
| 8 | 3670 PTS | ||
| 9 | 3460 PTS | ||
| 10 | 3365 PTS | ||
 Live Tennis Events | |||
|---|---|---|---|
 | EFG Swiss Open - Gstaad Switzerland | ||
 | Generali Open - Kitzbuhel Austria | ||
 | Millennium Estoril Open - Estoril Portugal | ||
 | Nordea Open - Bastad Sweden | ||
 | Bloomfield Hills Challenger United States | ||
 | Bunschoten Challenger Netherlands | ||
 | Cordenons Challenger Italy | ||
| Lincoln Challenger United States | ||
 | Pozoblanco Challenger Spain | ||
| Segovia Challenger Spain | ||
 | Tampere Challenger Finland | ||
 | Winnipeg Challenger Canada | ||
| Zug Challenger Switzerland | ||
 | M15 Bali Indonesia | ||
 | M15 Brisbane Australia | ||
| M15 Castelo Branco Portugal | ||
| M15 Gubbio Italy | ||
 | M15 Huamantla Mexico | ||
 | M15 Kursumlijska Banja Serbia | ||
 | M15 Monastir Tunisia | ||
 | M15 Nova Gorica Slovenia | ||
 | M15 Rognac France | ||
| M15 Segrate Italy | ||
 | M15 Slobozia Romania | ||
 | M15 Uslar Germany | ||
 | M15 Villa Constitucion Argentina | ||
 | M15 Wuning China | ||
| M25 Bacau Romania | ||
| M25 Denia Spain | ||
| M25 Gandia Spain | ||
 | M25 Hillcrest South Africa | ||
| M25 Kramsach Austria | ||
| M25 Louisville United States | ||
| M25 Uriage France | ||
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