| Australian Open - ženy | 01/14 02:25 | 19 | [168] Hailey Baptiste v Yue Yuan [162] | 6-7,7-6,6-3 | |
| Australian Open - ženy | 01/12 04:40 | 15 | [118] Nina Stojanovic v Hailey Baptiste [168] | 3-6,4-6 | |
| Australian Open - ženy | 01/09 23:00 | 14 | [168] Hailey Baptiste v Samantha Murray Sharan [290] | 6-1,6-7,7-6 | |
| WTA Melbourne 2 | 01/04 02:00 | 19 | [168] Hailey Baptiste v Kamilla Rakhimova [120] | 4-6,0-6 | |
| WTA Melbourne 2 | 01/03 04:15 | 14 | [95] Panna Udvardy v Hailey Baptiste [168] | 3-6,2-6 | |
| WTA Midland | 11/01 19:10 | 25 | [316] Danielle Lao v Hailey Baptiste [165] | 3-6,6-3,6-1 | |
| ITF W80 Tyler | 10/26 18:40 | 25 | [166] Hailey Baptiste v Tessah Andrianjafitrimo [192] | 2-6,2-6 | |
| ITF W80 Macon | 10/20 22:00 | 25 | [289] Emma Navarro v Hailey Baptiste [166] | 6-2,6-4 | |
| WTA Indian Wells | 10/04 18:00 | 14 | [66] Martina Trevisan v Hailey Baptiste [168] | 6-2,6-4 | |
| WTA Chicago | 09/29 20:15 | 25 | [34] Victoria Azarenka v Hailey Baptiste [174] | 6-2,4-6,6-3 | |
| WTA Chicago | 09/28 14:00 | 24 | [174] Hailey Baptiste v Jasmine Paolini [61] | 7-5,6-3 | |
| WTA Columbus | 09/22 17:55 | 26 | [178] Hailey Baptiste v Nuria Parrizas-Diaz [86] | 2-6,3-6 | |
| WTA Columbus | 09/20 14:00 | 25 | [177] Jamie Loeb v Hailey Baptiste [178] | 1-6,3-6 | |
| US Open - ženy | 08/31 15:00 | 23 | [181] Hailey Baptiste v Shuai Zhang [49] | 3-6,4-6 | |
| WTA Chicago - kvalifikace | 08/21 18:45 | 14 | [116] Kimberley Zimmermann v Hailey Baptiste [181] | 6-2,6-4 | |
| WTA Chicago | 08/19 20:00 | 26 | [101] Clara Tauson v Hailey Baptiste [181] | 6-2,3-6,6-3 | |
| WTA Chicago | 08/17 16:00 | 25 | [181] Hailey Baptiste v Danka Kovinic [66] | 6-3,6-4 | |
| WTA Berlín | 06/15 10:55 | 25 | [26] Jessica Pegula v Hailey Baptiste [166] | Retired | |
| WTA Berlín | 06/13 09:00 | 19 | [162] Priscilla Hon v Hailey Baptiste [203] | 3-6,5-7 | |
| WTA Berlín | 06/12 09:00 | 14 | [203] Hailey Baptiste v Jaqueline Cristian [152] | 6-3,6-1 | |
| French Open - ženy | 06/03 09:00 | 24 | [5] Sofia Kenin v Hailey Baptiste [203] | 7-5,6-3 | |
| French Open - ženy | 05/31 11:25 | 23 | [203] Hailey Baptiste v Anna Blinkova [77] | 6-1,6-4 | |
| French Open - ženy | 05/28 08:30 | 19 | [194] Julia Grabher v Hailey Baptiste [202] | 6-3,5-7,3-6 | |
| French Open - ženy | 05/26 16:25 | 15 | [202] Hailey Baptiste v Claire Liu [130] | 6-3,6-3 | |
| French Open - ženy | 05/25 11:30 | 14 | [471] Tereza Smitková v Hailey Baptiste [202] | 4-6,2-6 | |
| ITF W100 Bonita Springs | 05/12 23:35 | 25 | [201] Hailey Baptiste v Xinyu Wang [138] | 3-6,3-6 | |
| ITF W100 Charleston | 05/05 14:00 | 25 | [211] Hailey Baptiste v Renata Zarazua [141] | 4-6,1-6 | |
| ITF W60 Charlottesville | 04/30 18:00 | 27 | [145] Xinyu Wang v Hailey Baptiste [211] | 6-1,3-6,6-3 | |
| ITF W60 Charlottesville | 04/29 13:55 | 26 | [211] Hailey Baptiste v Maiar S A Abdelaziz [123] | 6-3,7-6 | |
| ITF W60 Charlottesville | 04/28 16:25 | 25 | [211] Hailey Baptiste v Jamie Loeb [267] | 6-2,6-2 |
Hailey Baptisteová (nepřechýleně Baptiste; * 3. listopadu 2001 Washington, D.C.) je americká profesionální tenistka. Ve své dosavadní kariéře na okruhu WTA Tour vyhrála jeden turnaj ve čtyřhře. V sérii WTA 125 vybojovala jednu deblovou trofej. V rámci okruhu ITF získala čtyři tituly ve dvouhře a čtyři ve čtyřhře.
Na žebříčku WTA byla ve dvouhře nejvýše klasifikována v březnu 2024 na 96. místě a ve čtyřhře v únoru téhož roku na 122. místě.
V juniorském tenise si zahrála finále čtyřhry US Open 2018, v němž s krajankou Dalaynou Hewittovou podlehly americkému páru Coco Gauffová a Caty McNallyová.