| WTA Stanford | 08/12 22:15 | 14 | Hailey Baptiste v Alexis Blokhina | 6-7,7-6,6-1 | |
| WTA Washington | 08/02 23:00 | 26 | [204] Hailey Baptiste v Coco Gauff [7] | 1-6,4-6 | |
| WTA Washington | 08/01 20:00 | 25 | [204] Hailey Baptiste v Karolína Plíšková [23] | 6-1,0-6,6-3 | |
| WTA Washington | 07/30 18:30 | 19 | [205] Hailey Baptiste v Peyton Stearns [57] | 7-6,6-2 | |
| WTA Washington | 07/29 20:05 | 14 | [48] Alycia Parks v Hailey Baptiste [205] | 3-6,1-6 | |
| ITF W60 Dallas | 07/25 17:45 | 25 | [205] Hailey Baptiste v Hanna Chang [325] | Retired | |
| WTA Palermo | 07/15 19:35 | 45 | [215] Hailey Baptiste v Dalila Spiteri [460] | 1-6,6-2,2-6 | |
| WTA Contrexeville | 07/12 12:35 | 26 | [115] Tereza Martincová v Hailey Baptiste [215] | 4-6,6-3,6-2 | |
| WTA Contrexeville | 07/10 13:40 | 25 | [271] Margaux Rouvroy v Hailey Baptiste [215] | 1-6,4-6 | |
| ITF W60 Říčany | 06/14 08:00 | 25 | Miriana Tona v Hailey Baptiste | 6-4,6-2 | |
| ITF W60 Caserta | 06/11 08:30 | 29 | [194] Raluca G Serban v Hailey Baptiste [243] | 3-6,2-6 | |
| ITF W60 Caserta | 06/10 11:00 | 28 | [243] Hailey Baptiste v Anastasia Tikhonova [236] | 6-4,7-5 | |
| ITF W60 Caserta | 06/09 12:50 | 27 | [243] Hailey Baptiste v Elena Malygina [357] | 6-2,6-1 | |
| ITF W60 Caserta | 06/08 17:00 | 26 | [243] Hailey Baptiste v Audrey Albie [253] | 7-5,7-5 | |
| ITF W60 Caserta | 06/06 12:30 | 25 | [179] Selena Janicijevic v Hailey Baptiste [243] | 6-7,0-6 | |
| ITF W60 Brescia | 06/01 10:00 | 26 | [252] Louisa Chirico v Hailey Baptiste [243] | 6-7,7-6,6-4 | |
| ITF W60 Brescia | 05/30 12:00 | 25 | [243] Hailey Baptiste v Mona Barthel [207] | 7-6,2-6,6-4 | |
| ITF W60 Grado | 05/25 16:30 | 27 | [229] Lucie Havlickova v Hailey Baptiste [244] | 6-1,4-6,6-3 | |
| ITF W60 Grado | 05/24 11:25 | 26 | [325] Sofia Costoulas v Hailey Baptiste [244] | 3-6,2-6 | |
| ITF W60 Grado | 05/23 12:55 | 25 | [170] Quinn Gleason v Hailey Baptiste [244] | 1-6,7-5,2-6 | |
| ITF W100 Bonita Springs | 05/04 17:50 | 26 | [197] Marcela Zacarias v Hailey Baptiste [228] | Retired | |
| ITF W100 Bonita Springs | 05/03 20:40 | 25 | [228] Hailey Baptiste v Yue Yuan [116] | 6-4,6-4 | |
| ITF W60 Charlottesville | 04/26 14:00 | 25 | Allie Kiick v Hailey Baptiste | 6-0,3-6,6-3 | |
| ITF W100 Charleston | 04/17 19:30 | 54 | Hailey Baptiste v Chloe Beck | Retired | |
| ITF W25 Boca Raton | 04/16 14:00 | 29 | [152] Caroline Dolehide v Hailey Baptiste [248] | 6-4,6-4 | |
| ITF W25 Boca Raton | 04/15 17:00 | 28 | [248] Hailey Baptiste v Sachia Vickery [178] | 6-4,6-2 | |
| ITF W25 Boca Raton | 04/15 13:00 | 27 | Yulia Starodubtsewa v Hailey Baptiste | 3-6,0-6 | |
| ITF W25 Boca Raton | 04/14 15:00 | 26 | [248] Hailey Baptiste v Louisa Chirico [168] | 6-4,2-6,7-5 | |
| ITF W25 Boca Raton | 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 |
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.