| 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 Potosi | 03/28 21:30 | 25 | [280] Hailey Baptiste v Leolia Jeanjean [109] | 2-6,1-6 | |
| WTA San Luis Potosi | 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 Raton | 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 Santo Domingo - nők | 02/18 15:30 | 28 | [233] Hailey Baptiste v Carole Monnet [221] | 6-7,2-6 | |
| ITF W25 Santo Domingo - nők | 02/17 13:30 | 27 | [481] Sofia Sewing v Hailey Baptiste [233] | 3-6,4-6 | |
| ITF W25 Santo Domingo - nők | 02/16 17:15 | 26 | Lauren Proctor v Hailey Baptiste | 3-6,2-6 | |
| ITF W25 Santo Domingo - nők | 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 | |
| Ausztrál Open - nők | 01/09 23:00 | 14 | [157] Hailey Baptiste v Yuriko Miyazaki [178] | 4-6,5-7 | |
| ITF W60 Canberra | 01/06 01:00 | 28 | [136] Katie Boulter v Hailey Baptiste [166] | 6-2,6-2 | |
| ITF W60 Canberra | 01/05 00:45 | 27 | [233] Astra Sharma v Hailey Baptiste [166] | 1-6,3-6 | |
| ITF W60 Canberra | 01/04 02:25 | 26 | [157] Mirjam Bjorklund v Hailey Baptiste [166] | 6-3,5-7,2-6 | |
| ITF W60 Canberra | 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 | |
| WTA Buenos Aires | 11/17 13:30 | 26 | [160] Maria Lourdes Carle v Hailey Baptiste [182] | 6-4,6-0 | |
| WTA Buenos Aires | 11/15 15:15 | 25 | [146] Harmony Tan v Hailey Baptiste [182] | Retired | |
| US Open - nők | 08/23 23:00 | 14 | [88] Viktorija Golubic v Hailey Baptiste [157] | 6-4,6-4 |
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 three 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 Citi Open in Washington, 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 2024 Miami Open.