United States
| Age | 20 (28-08-2005) |
| Country | United States |
| Birthplace | |
| Height | |
| Weight | |
| Plays | |
| Backhand | |
| Favorite Surface |  Hard |
| Coach | |
| Turned Pro | |
| Player Status | Active |
Match Stats
Hard
Clay
Grass
Indoor
All
Service Stats
| Aces / Game | 0.00 | 0 / 15 |
| DFs / Game | 0.07 | 1 / 15 |
| 1st Serve % | 71.8% | 74 / 103 |
| 1st Serve Win % | 47.3% | 35 / 74 |
| 2nd Serve Win % | 44.8% | 13 / 29 |
| Service Points Win % | 46.6% | 48 / 103 |
Return Stats
| Opponent Aces / Game | 0.20 | 3 / 15 |
| Opponent Double Faults / Game | 0.33 | 5 / 15 |
| Opponent 1st Serve % | 57.6% | 49 / 85 |
| 1st Return Win % | 22.4% | 11 / 49 |
| 2nd Return Win % | 50.0% | 18 / 36 |
| Return Points Win % | 34.1% | 29 / 85 |
Break Points (Serve)
| Break Points Saved Per Game | 0.93 | 14 / 15 |
| Break Points Faced Per Game | 1.40 | 21 / 15 |
| Break Points Save % | 66.7% | 14 / 21 |
| Service Hold % | 53.3% | 8 / 15 |
Break Points (Rtn)
| Break Points Won Per Game | 0.07 | 1 / 15 |
| Opponent Break Points Per Game | 0.40 | 6 / 15 |
| BP Won % | 16.7% | 1 / 6 |
| Opp Hold % | 93.3% | 14 / 15 |
William Hsieh Past Matches
 | M25 Santo Domingo 4 | |||||
11 Jun 2025 R1 | LL |  | 6 2 6 1 | L |  | H2H 0-0 |
10 Jun 2025 QF | LL | | 6 2 6 1 | L | | H2H 0-0 |
09 Jun 2025 Q2 | LL | | 6 3 4 6 10 7 | W | H2H 0-0 | |
| M25 Santo Domingo 3 | |||||
02 Jun 2025 Q2 | | 6 3 6 3 | L | H2H 0-0 | ||
William Hsieh Surface Summary
| year | All | hard | clay | indoor | grass |
| 2025 | 2-5 | 1-3 | 1-2 | 0-0 | 0-0 |
| 2024 | 23-20 | 23-20 | 0-0 | 0-0 | 0-0 |
William Hsieh Performance Breakdown
Tournament Level Breakdown
| Grand Slam | 0.0% | 0 / 0 |
| Masters | 0.0% | 0 / 0 |
| Main Tour | 0.0% | 0 / 0 |
| Cups | 0.0% | 0 / 0 |
| Challengers | 0.0% | 0 / 0 |
| Futures | 50.0% | 25 / 25 |
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 | 0.0% | 0 / 0 |
| Vs Top.50 | 0.0% | 0 / 0 |
| Vs Top.100 | 0.0% | 0 / 0 |
Surface Breakdown
| Overall | 50.0% | 25 / 25 |
| Hard | 51.1% | 24 / 23 |
| Clay | 33.3% | 1 / 2 |
| Indoor | 0.0% | 0 / 0 |
| Grass | 0.0% | 0 / 0 |
Round Breakdown
| Quarter-Final | 0.0% | 0 / 1 |
| Second | 50.0% | 1 / 1 |
| First | 20.0% | 2 / 8 |
| Qualifying Final | 50.0% | 5 / 5 |
| Qualifying R2 | 70.0% | 7 / 3 |
| Qualifying R1 | 58.8% | 10 / 7 |
William Hsieh Titles/Finals/Semis 
Title
Finals
William Hsieh interesting Heads to Heads
 William Hsieh | Draw VIEW H2H |  Jae Hwan Kim | ||
William Hsieh | Draw VIEW H2H |  Oliver Anderson | ||
William Hsieh | Draw VIEW H2H |  Alexey Aleshchev | ||
William Hsieh | Draw VIEW H2H |  Elio Jose Ribeiro Lago | ||
William Hsieh | Draw VIEW H2H |  Luc Fomba | ||
William Hsieh | Draw VIEW H2H |  Patricio Betancourt | ||
William Hsieh | Draw VIEW H2H |  Ezekiel Clark | ||
William Hsieh | Draw VIEW H2H |  Peter Sallay | ||
William Hsieh | Draw VIEW H2H |  Jordan Chiu | ||
William Hsieh | Draw VIEW H2H |  Matas Vasiliauskas | ||
William Hsieh | Draw VIEW H2H |  Aydan Gomez Osorio | ||
William Hsieh | Draw VIEW H2H |  Dusan Lojda | ||
Upcoming Tennis Predictions & Head to Heads
Haita Guna Prediction H2H (1-0)
Virtanen Majchrzak Prediction H2H (0-0)
Aguilar Pellegrino Prediction H2H (0-1)
Potenza Piraino Prediction H2H (1-0)
Baez Sanchez-Izquierdo Prediction H2H (0-0)
Herbert Glinka Prediction H2H (0-0)
Kai Wehnelt Fons Van Sambeek Prediction H2H (0-0)
 ATP Rankings | |||
|---|---|---|---|
| 1 | 14750 PTS | ||
| 2 | 11960 PTS | ||
| 3 | 5705 PTS | ||
| 4 | 4460 PTS | ||
| 5 | 4070 PTS | ||
| 6 | 4050 PTS | ||
| 7 | 3855 PTS | ||
| 8 | 3760 PTS | ||
| 9 | 3720 PTS | ||
| 10 | 3320 PTS | ||
 Live Tennis Events | |||
|---|---|---|---|
 | French Open - Paris France | ||
 | Boss Open - Stuttgart Germany | ||
 | Libema Open - 's-Hertogenbosch Netherlands | ||
| Bad Rappenau Challenger Germany | ||
 | Birmingham Challenger Great Britain | ||
 | Centurion 2 Challenger South Africa | ||
 | Perugia Challenger Italy | ||
 | Prostejov Challenger Czech Republic | ||
 | Tyler Challenger United States | ||
 | M15 Kayseri Turkey | ||
 | M15 Kursumlijska Banja Serbia | ||
| M15 Lakewood United States | ||
 | M15 Monastir Tunisia | ||
| M15 Rosbach Germany | ||
 | M15 Szentendre Hungary | ||
 | M15 Tsaghkadzor Armenia | ||
 | M25 Bistrita Romania | ||
| M25 Caltanissetta Italy | ||
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