| ITF - W25 Boca Ratón | 04/13 13:50 | 25 | [248] Hailey Baptiste v Jamie Loeb [243] | 6-1,6-4 | |
| WTA - Charleston | 04/05 17:05 | 25 | [275] Hailey Baptiste v Madison Keys [22] | 1-6,2-6 | |
| WTA - Charleston | 04/04 18:35 | 24 | [55] Xiyu Wang v Hailey Baptiste [275] | 3-6,3-6 | |
| WTA - Charleston | 04/02 16:40 | 19 | [280] Hailey Baptiste v Heather Watson [147] | 7-5,6-3 | |
| WTA - Charleston | 04/01 20:45 | 14 | [280] Hailey Baptiste v Marcela Zacarias [196] | 6-2,6-1 | |
| WTA - San Luis Potosí | 03/28 21:30 | 25 | [280] Hailey Baptiste v Leolia Jeanjean [109] | 2-6,1-6 | |
| WTA - San Luis Potosí | 03/27 19:50 | 19 | [280] Hailey Baptiste v Quinn Gleason [194] | 6-1,6-4 | |
| WTA - Miami | 03/21 22:30 | 23 | [116] Viktorija Golubic v Hailey Baptiste [280] | 7-6,6-1 | |
| ITF - W25 Boca Ratón | 03/08 17:05 | 25 | [153] Maria Lourdes Carle v Hailey Baptiste [270] | 7-6,6-0 | |
| WTA - Austin | 02/25 19:00 | 45 | [141] Katie Boulter v Hailey Baptiste [230] | 7-5,6-0 | |
| ITF - W25 São Domingos | 02/18 15:30 | 28 | [233] Hailey Baptiste v Carole Monnet [221] | 6-7,2-6 | |
| ITF - W25 São Domingos | 02/17 13:30 | 27 | [481] Sofia Sewing v Hailey Baptiste [233] | 3-6,4-6 | |
| ITF - W25 São Domingos | 02/16 17:15 | 26 | Lauren Proctor v Hailey Baptiste | 3-6,2-6 | |
| ITF - W25 São Domingos | 02/15 17:10 | 25 | Jenna Defalco v Hailey Baptiste | 3-6,2-6 | |
| ITF - W60 Orlando | 02/09 15:30 | 26 | [181] Ashlyn Krueger v Hailey Baptiste [237] | 6-3,6-1 | |
| ITF - W60 Orlando | 02/08 15:00 | 25 | [237] Hailey Baptiste v Haruna Arakawa [403] | 6-4,7-6 | |
| WTA - Cali | 01/31 17:50 | 25 | [229] Hailey Baptiste v Elvina Kalieva [251] | 7-5,6-7,4-6 | |
| ITF - W60 Vero Beach | 01/19 16:00 | 26 | [156] Hailey Baptiste v Emiliana Arango [394] | 2-6,3-6 | |
| ITF - W60 Vero Beach | 01/18 15:50 | 25 | Hailey Baptiste v Kaitlin Quevedo | 7-6,6-3 | |
| Open da Austrália - Feminino | 01/09 23:00 | 14 | [157] Hailey Baptiste v Yuriko Miyazaki [178] | 4-6,5-7 | |
| ITF - W60 Camberra | 01/06 01:00 | 28 | [136] Katie Boulter v Hailey Baptiste [166] | 6-2,6-2 | |
| ITF - W60 Camberra | 01/05 00:45 | 27 | [233] Astra Sharma v Hailey Baptiste [166] | 1-6,3-6 | |
| ITF - W60 Camberra | 01/04 02:25 | 26 | [157] Mirjam Bjorklund v Hailey Baptiste [166] | 6-3,5-7,2-6 | |
| ITF - W60 Camberra | 01/03 01:20 | 25 | [166] Hailey Baptiste v Erika Andreeva [135] | 6-3,7-5 | |
| ITF - W60 Rio de Janeiro | 12/01 12:55 | 27 | [174] Hailey Baptiste v Irina Khromacheva [237] | 6-4,4-6,1-6 | |
| ITF - W60 Rio de Janeiro | 11/30 12:50 | 26 | [174] Hailey Baptiste v Martina Capurro Taborda [443] | 7-5,6-4 | |
| ITF - W60 Rio de Janeiro | 11/29 13:50 | 25 | Hailey Baptiste v Bianca Bernardes | 6-0,6-0 | |
| WTA - Montevideo | 11/25 21:35 | 27 | [158] Diana Shnaider v Hailey Baptiste [176] | 6-4,6-2 | |
| WTA - Montevideo | 11/24 21:50 | 26 | [270] Julia Riera v Hailey Baptiste [176] | 1-6,6-7 | |
| WTA - Montevideo | 11/23 19:45 | 25 | [176] Hailey Baptiste v Laura Pigossi [118] | 3-6,7-6,6-1 |
Hailey Baptiste (born November 3, 2001) is an American professional tennis player. On 18 March 2024, she reached her best singles ranking of world No. 96. She has won one doubles title on the WTA Tour with one doubles title on the WTA Challenger Tour. She has also won four singles and four doubles titles on the ITF Women's Circuit.
On the junior tour, she reached a career-high ranking of No. 38 on January 29, 2018. She ended runner-up at the US Open junior doubles' tournament in 2018.
Baptiste made her WTA Tour main-draw debut at her hometown tournament, the 2019 Washington Open, beating Grand Slam finalist and former top-ten player, Madison Keys in the first round.
Baptiste made her World TeamTennis debut in 2020 with the Vegas Rollers as an alternate, later ending up on the roster for the New York Empire in the 2020 season at The Greenbrier.
She made her WTA 1000 debut at the 2021 Miami Open after reaching the main draw having received a wildcard for the qualifying competition.
She received a wildcard for the main draw at the 2023 Miami Open.
At the WTA 1000 Guadalajara Open, she defeated 16th seed Karolína Plíšková for the second time in the season having prevailed also earlier at the Washington Open.
Following her first-round main-draw win as a qualifier at the 2024 Indian Wells Open over fellow American qualifier Robin Montgomery, she reached the top 100 in the rankings on 18 March 2024. She received a wildcard for the main draw at the Miami Open.