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Hailey Baptiste (born November 3, 2001) is an American professional tennis player. She reached her best singles ranking of world No. 47 on 25 August 2025. She has won one doubles title on the WTA Tour and two titles on the WTA Challenger Tour. Her highest doubles ranking is No. 92, achieved 22 July 2024. She has also won four singles and four doubles titles on the ITF Women's Circuit.
| W | F | SF | QF | | RR | Q# | P# | DNQ | A | Z# | PO | G | S | B | NMS | NTI | P | NH |
| Tournament | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | SR | W–L | Win% |
| Grand Slam tournaments | |||||||||||
| Australian Open | A | A | Q2 | Q2 | 2R | Q1 | Q3 | 1R | 0 / 2 | 1–2 | 33% |
| French Open | A | A | A | 2R | 1R | A | 2R | 4R | 0 / 4 | 5–4 | 56% |
| Wimbledon | A | A | NH | A | A | A | Q2 | 3R | 0 / 1 | 2–1 | 67% |
| US Open | A | Q2 | 1R | 1R | Q1 | Q1 | Q3 | 2R | 0 / 3 | 1–3 | 25% |
| Win–loss | 0–0 | 0–0 | 0–1 | 1–2 | 1–2 | 0–0 | 1–1 | 6–4 | 0 / 10 | 9–10 | 47% |
| WTA 1000 | |||||||||||
| Qatar Open | A | NTI | A | NTI | A | NTI | A | A | 0 / 0 | 0–0 | – |
| Dubai | NTI | A | NTI | A | NTI | A | A | A | 0 / 0 | 0–0 | – |
| Indian Wells Open | A | A | NH | Q1 | 1R | A | 2R | 2R | 0 / 3 | 2–3 | 40% |
| Miami Open | A | A | NH | 1R | 1R | 1R | 1R | 3R | 0 / 5 | 2–5 | 29% |
| Madrid Open | A | A | NH | A | A | A | 1R | 2R | 0 / 2 | 1–2 | 33% |
| Italian Open | A | A | A | A | A | A | Q1 | 3R | 0 / 1 | 2–1 | 67% |
| Canadian Open | A | A | NH | A | A | A | A | 0 / 0 | 0–0 | – | |
| Cincinnati Open | A | A | A | A | Q1 | A | Q1 | 0 / 0 | 0–0 | – | |
| Guadalajara Open | NH | A | 3R | NTI | 0 / 1 | 2–1 | 67% | ||||
| Wuhan Open | A | A | NH | 3R | 0 / 1 | 2–1 | 67% | ||||
| China Open | A | A | NH | A | 2R | 0 / 1 | 1–1 | 50% | |||
| Career statistics | |||||||||||
| Tournaments | 0 | 1 | 1 | 6 | 7 | 4 | 6 | 15 | Career total: 40 | ||
| Overall win–loss | 0–0 | 1–1 | 0–1 | 3–6 | 3–7 | 4–4 | 2–5 | 19–15 | 0 / 40 | 32–39 | 45% |
| Year-end ranking | 457 | 285 | 231 | 160 | 181 | 131 | 93 | $2,141,984 | |||
| Tournament | 2019 | 2020 | 2021 | 2022 | W–L |
| Grand Slam tournaments | |||||
| Australian Open | A | A | A | A | 0–0 |
| French Open | A | A | A | A | 0–0 |
| Wimbledon | A | NH | A | A | 0–0 |
| US Open | 1R | 1R | 1R | 2R | 1–2 |
| Win–loss | 0–1 | 0–1 | 0–1 | 1–1 | 1–4 |
| WTA 1000 | |||||
| Qatar Open | A | A | A | A | 0–0 |
| Dubai | A | A | A | A | 0–0 |
| Indian Wells Open | A | NH | A | A | 0–0 |
| Miami Open | A | NH | 1R | A | 0–1 |
| Madrid Open | A | NH | A | A | 0–0 |
| Italian Open | A | A | A | A | 0–0 |
| Canadian Open | A | NH | A | A | 0–0 |
| Cincinnati Open | A | A | A | A | 0–0 |
| Wuhan Open | A | NH | 0–0 | ||
| China Open | A | NH | 0–0 | ||
| Mexican Open | NMS/NH | 0–0 | |||
| Legend |
| Grand Slam |
| WTA 1000 |
| WTA 500 |
| WTA 250 (1–0) |
| Finals by surface |
| Hard (0–0) |
| Grass (0–0) |
| Clay (1–0) |
| Result | W–L | Date | Tournament | Tier | Surface | Partner | Opponents | Score |
| Win | 1–0 | Apr 2021 | Charleston Open, United States | WTA 250 | Clay | Caty McNally | Ellen Perez Storm Sanders | 6–7(4), 6–4, [10–6] |
| Result | W–L | Date | Tournament | Surface | Partner | Opponents | Score |
| Loss | 0–1 | Aug 2023 | Golden Gate Open, US | Hard | Claire Liu | Jodie Burrage Olivia Gadecki | 6–7(4), 7–6(6), [8–10] |
| Win | 1–1 | Nov 2023 | Midland Tennis Classic, US | Hard (i) | Whitney Osuigwe | Sophie Chang Ashley Lahey | 2–6, 6–2, [10–1] |
| Win | 2–1 | Jun 2024 | Veneto Open, Italy | Grass | Alycia Parks | Miriam Kolodziejová Anna Sisková | 7–6(4), 6–2 |
| Legend |
| W60 tournaments (1–0) |
| W50 tournaments (0–1) |
| W25 tournaments (3–1) |
| Finals by surface |
| Hard (2–1) |
| Clay (2–1) |
| Result | W–L | Date | Tournament | Tier | Surface | Opponent | Score |
| Win | 1–0 | Jan 2019 | ITF Plantation, United States | W25 | Clay | Anna Bondár | 7–5, 6–7(6), 6–2 |
| Win | 2–0 | Jun 2019 | ITF Sumter, United States | W25 | Hard | Victoria Duval | 6–2, 7–5 |
| Win | 3–0 | Nov 2019 | ITF Tucson, United States | W25 | Hard | Marcela Zacarías | 4–6, 6–4, 6–3 |
| Loss | 3–1 | Apr 2023 | ITF Boca Raton, United States | W25 | Clay | Caroline Dolehide | 4–6, 4–6 |
| Win | 4–1 | Jun 2023 | Internazionali di Caserta, Italy | W60 | Clay | Raluca Șerban | 6–3, 6–2 |
| Loss | 4–2 | Feb 2024 | ITF Morelia, Mexico | W50 | Hard | Jéssica Bouzas Maneiro | 7–6(11), 1–6, 6–7(1) |
| Legend |
| W100 tournaments (2–1) |
| W60/75 tournaments (1–3) |
| W25 tournaments (1–1) |
| Finals by surface |
| Hard (3–3) |
| Clay (1–2) |
| Result | W–L | Date | Tournament | Tier | Surface | Partner | Opponents | Score |
| Loss | 0–1 | Jan 2019 | ITF Daytona Beach, US | W25 | Clay | Emina Bektas | Anna Bondár Ulrikke Eikeri | 3–6, 7–5, [9–11] |
| Loss | 0–2 | Feb 2020 | Kentucky Open, US | W100 | Hard (i) | Whitney Osuigwe | Quinn Gleason Catherine Harrison | 5–7, 2–6 |
| Win | 1–2 | Jan 2022 | ITF Orlando Pro, US | W60 | Hard | Whitney Osuigwe | Angela Kulikov Rianna Valdes | 7–6(7), 7–5 |
| Loss | 1–3 | Jan 2023 | Canberra International, Australia | W60 | Hard | Robin Anderson | Irina Khromacheva Anastasia Tikhonova | 4–6, 5–7 |
| Win | 2–3 | Mar 2023 | ITF Boca Raton, US | W25 | Hard | Whitney Osuigwe | Francesca Di Lorenzo Makenna Jones | 6–2, 6–2 |
| Win | 3–3 | Nov 2023 | ITF Charleston Pro, US | W100 | Clay | Whitney Osuigwe | Nigina Abduraimova Carole Monnet | 6–4, 3–6, [13–11] |
| Loss | 3–4 | Jan 2024 | Vero Beach Open, US | W75+H | Clay | Whitney Osuigwe | Allura Zamarripa Maribella Zamarripa | 3–6, 6–3, [4–10] |
| Loss | 3–5 | Jan 2024 | Georgia's Rome Open, US | W75 | Hard (i) | Whitney Osuigwe | Angela Kulikov Jamie Loeb | walkover |
| Win | 4–5 | Feb 2024 | Guanajuato Open, Mexico | W100 | Hard | Whitney Osuigwe | Ann Li Rebecca Marino | 7–5, 6–4 |
| Result | Year | Tournament | Surface | Partner | Opponents | Score |
| Loss | 2018 | US Open | Hard | Dalayna Hewitt | Caty McNally Coco Gauff | 3–6, 2–6 |
| Result | W–L | Opponent | Rank | Event | Surface | Round | Score | mw- Rank | H2H |
| 2021 | |||||||||
| Loss | 0–1 | Sofia Kenin | No. 5 | French Open, France | Clay | 2R | 5–7, 3–6 | No. 203 | 0–1 |
| 2022 | |||||||||
| Loss | 0–2 | Jessica Pegula | No. 7 | Washington Open, US | Hard | 1R | 2–6, 2–6 | No. 148 | 0–2 |
| 2023 | |||||||||
| Loss | 0–3 | Coco Gauff | No. 7 | Washington Open, US | Hard | 2R | 1–6, 4–6 | No. 204 | 0–1 |
| 2024 | |||||||||
| Win | 1–3 | Barbora Krejčíková | No. 10 | Wuhan Open, China | Hard | 2R | 6–3, 7–5 | No. 102 | 1–1 |
| 2025 | |||||||||
| Loss | 1–4 | Madison Keys | No. 8 | French Open, France | Clay | 4R | 3–6, 5–7 | No. 70 | 1–3 |