| Santaizi ATP Challenger | |
|---|---|
 2025 Santaizi ATP Challenger | |
| ATP Challenger Tour | |
| Location | Neihu District,Taipei City,Taiwan |
| Venue | National Taiwan University Sports Center |
| Category | ATP Challenger Tour (-2024), Challenger 100 (2025-) |
| Surface | Hard (indoor) |
| Draw | 32S/14Q/16D |
| Prize money | $160,000 (2025), $82,000 (2024)[1] |
TheSantaizi ATP Challenger is atennistournament held inTaipei City,Taiwan since 2014. The event is part of theATP Challenger Tour and is played on indoorhardcourts. Following a four year hiatus, it returned in 2024 with a prize money of $82,000.
| Year | Champion | Runner-up | Score |
|---|---|---|---|
| 2025[2] |  Yoshihito Nishioka |  James Duckworth | 7–5, 7–6(7–5) |
| 2024[3] | Adam Walton |  Illya Marchenko | 3–6, 6–2, 7–6(7–3) |
| 2020–23 | Not held | ||
| 2019 |  Dennis Novak | Sergiy Stakhovsky | 6–2, 6–4 |
| 2018 |  Yuki Bhambri | Ramkumar Ramanathan | 6–3, 6–4 |
| 2017 |  Lu Yen-hsun | Tatsuma Ito | 6–1, 7–6(7–4) |
| 2016 |  Daniel Evans |  Konstantin Kravchuk | 3–6, 6–4, 6–4 |
| 2015 | Sam Groth | Konstantin Kravchuk | 6–7(5–7), 6–4, 7–6(7–3) |
| 2014 |  Gilles Müller | John-Patrick Smith | 6–3, 6–3 |
| Year | Champion | Runner-up | Score |
|---|---|---|---|
| 2025[10] |  Nathaniel Lammons Jean-Julien Rojer | Kaito UesugiSeita Watanabe | 7–6(7–4), 7–6(8–6) |
| 2024[11] | Ray Ho Nam Ji-sung | Toshihide MatsuiKaito Uesugi | 6–2, 6–2 |
| 2020–23 | Not held | ||
| 2019 | Sriram Balaji Jonathan Erlich | Sander ArendsTristan-Samuel Weissborn | 6–3, 6–2 |
| 2018 | Matthew EbdenAndrew Whittington | Prajnesh GunneswaranSaketh Myneni | 6–4, 5–7, [10–6] |
| 2017 |  Marco Chiudinelli Franko Škugor |  Sanchai RatiwatanaSonchat Ratiwatana | 4–6, 6–2, [10–5] |
| 2016 | Hsieh Cheng-pengYang Tsung-hua |  Frederik Nielsen David O'Hare | 7–6(8–6), 6–4 |
| 2015 | Matthew EbdenWang Chieh-fu | Sanchai RatiwatanaSonchat Ratiwatana | 6–1, 6–4 |
| 2014 | Samuel GrothChris Guccione | Austin KrajicekJohn-Patrick Smith | 6–4, 5–7, [10–8] |