| WTA Charleston | 04/07 15:45 | 25 | [216] Hailey Baptiste v Ons Jabeur [28] | 3-6,3-6 | |
| WTA Charleston | 04/06 17:25 | 24 | [155] Caroline Dolehide v Hailey Baptiste [216] | 3-6,3-6 | |
| WTA Charleston | 04/06 14:00 | 24 | Camila Giorgi v Hailey Baptiste | Cancelled | |
| WTA Miami | 03/24 22:55 | 23 | [236] Hailey Baptiste v Kristina Kucova [149] | 4-6,6-2,5-7 | |
| WTA Miami | 03/23 17:10 | 19 | [236] Hailey Baptiste v Greet Minnen [112] | 6-3,6-4 | |
| WTA Miami | 03/22 19:15 | 14 | [76] Misaki Doi v Hailey Baptiste [236] | 6-1,0-6,6-7 | |
| ITF W25 Boca Raton | 02/27 17:35 | 28 | [242] Hailey Baptiste v Varvara Lepchenko [177] | 3-6,7-6,2-6 | |
| ITF W25 Boca Raton | 02/26 19:05 | 27 | [241] Tereza Mrdeza v Hailey Baptiste [242] | 6-3,2-6,2-6 | |
| ITF W25 Boca Raton | 02/25 18:05 | 26 | [373] Robin Montgomery v Hailey Baptiste [242] | 3-6,3-6 | |
| ITF W25 Boca Raton | 02/23 20:10 | 25 | [242] Hailey Baptiste v Varvara Flink [179] | 6-1,4-6,7-6 | |
| ITF W25 Orlando | 02/17 23:05 | 25 | [236] Hailey Baptiste v Renata Zarazua [142] | 7-5,5-7,3-6 | |
| ITF W60 Rome, GA | 01/27 20:35 | 25 | [175] Veronica Cepede Royg v Hailey Baptiste [234] | 6-2,6-3 | |
| Ausztrál Open - nők | 01/12 06:00 | 15 | [233] Hailey Baptiste v Maria C O Serrano [186] | 6-7,6-7 | |
| Ausztrál Open - nők | 01/10 08:00 | 60 | [228] Victoria Kan v Hailey Baptiste [233] | 6-7,2-6 | |
| ITF W100 Charleston | 11/05 16:50 | 26 | [244] Hailey Baptiste v Lauren Davis [73] | 2-6,1-6 | |
| ITF W100 Charleston | 11/04 19:45 | 25 | [244] Hailey Baptiste v Astra Sharma [127] | 6-2,7-6 | |
| ITF W100 Charleston | 11/03 17:05 | 54 | [173] Veronica Cepede Royg v Hailey Baptiste [244] | 2-6,7-6,8-10 | |
| ITF W100 Charleston | 11/02 19:15 | 54 | [245] Hailey Baptiste v Robin Anderson [202] | 6-1,7-5 | |
| ITF W80 Tyler | 10/30 17:00 | 26 | [134] Katarzyna Kawa v Hailey Baptiste [245] | 6-3,4-6,6-1 | |
| ITF W80 Tyler | 10/29 16:55 | 25 | [245] Hailey Baptiste v Kristie Ahn [106] | 6-2,6-2 | |
| ITF W80 Macon | 10/19 15:40 | 54 | [246] Hailey Baptiste v Asia Muhammad [198] | 1-6,2-6 | |
| US Open - nők | 08/31 15:00 | 23 | [44] Kristina Mladenovic v Hailey Baptiste [236] | 7-5,6-2 | |
| WTA Lexington | 08/09 19:10 | 45 | [233] Hailey Baptiste v Usue Maitane Arconada [138] | 5-7,2-6 | |
| Matchplay 120 - nők | 07/08 20:00 | - | [233] Hailey Baptiste v Madison Brengle [79] | 2-6,3-6 | |
| Matchplay 120 - nők | 07/06 17:00 | 1 | Hailey Baptiste v Ann Li | Cancelled | |
| US Pro Tennis Series - nők | 05/15 21:00 | - | [178] Varvara Lepchenko v Hailey Baptiste [233] | 6-4,6-2 | |
| US Pro Tennis Series - nők | 05/15 15:30 | - | [358] Panna Udvardy v Hailey Baptiste [233] | 2-6,5-7 | |
| US Pro Tennis Series - nők | 05/13 20:55 | 1 | [233] Hailey Baptiste v Marine Partaud [488] | 4-6,0-6 | |
| US Pro Tennis Series - nők | 05/13 14:30 | 1 | Channelle Van Nguyen v Hailey Baptiste | 3-6,3-6 | |
| US Pro Tennis Series - nők | 05/11 20:35 | 1 | [368] Alycia Parks v Hailey Baptiste [233] | 3-6,3-6 |
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.