| ITF W75 Vero Beach | 01/25 16:00 | 26 | [130] Hailey Baptiste v Vivian Wolff [399] | 6-4,4-6,6-4 | |
| ITF W75 Vero Beach | 01/24 19:45 | 25 | Hailey Baptiste v Irina Ramialison | 6-2,6-1 | |
| Australian Open - ženy | 01/12 02:00 | 19 | [172] Ella Seidel v Hailey Baptiste [131] | 6-0,6-4 | |
| Australian Open - ženy | 01/11 04:05 | 15 | [150] Arianne Hartono v Hailey Baptiste [131] | 2-6,4-6 | |
| Australian Open - ženy | 01/10 04:45 | 14 | [246] Seone Mendez v Hailey Baptiste [131] | 3-6,1-6 | |
| WTA Brisbane | 01/02 12:45 | 24 | [129] Hailey Baptiste v Danielle Collins [54] | 1-6,6-4,3-6 | |
| WTA Brisbane | 12/30 01:45 | 19 | [131] Hailey Baptiste v Sofya Lansere [201] | 6-3,7-5 | |
| WTA Brisbane | 12/29 01:00 | 14 | [131] Hailey Baptiste v Gabriela Knutson [163] | 6-1,6-0 | |
| ITF W100 Charleston | 11/11 16:00 | 28 | [38] Emma Navarro v Hailey Baptiste [131] | 6-2,6-1 | |
| ITF W100 Charleston | 11/10 16:45 | 27 | [131] Hailey Baptiste v Elizabeth Mandlik [127] | 6-2,4-6,6-1 | |
| ITF W100 Charleston | 11/09 17:15 | 26 | [131] Hailey Baptiste v Rasheeda McAdoo [261] | 6-2,2-6,6-4 | |
| ITF W100 Charleston | 11/08 15:00 | 25 | [131] Hailey Baptiste v Maria Kozyreva [498] | 7-6,1-6,6-4 | |
| WTA Midland | 11/03 18:00 | 27 | [115] Anna Kalinskaya v Hailey Baptiste [136] | 7-6,4-6,7-6 | |
| WTA Midland | 11/01 23:00 | 26 | [136] Hailey Baptiste v Peyton Stearns [48] | 6-2,6-7,6-2 | |
| WTA Midland | 10/31 17:55 | 25 | [366] Victoria Hu v Hailey Baptiste [136] | 5-7,5-7 | |
| WTA Tampico | 10/27 00:45 | 26 | [108] Katie Volynets v Hailey Baptiste [136] | 6-7,6-3,6-1 | |
| WTA Tampico | 10/24 01:00 | 25 | [444] Katrina Scott v Hailey Baptiste [136] | 1-6,7-6,4-6 | |
| ITF W80 Macon | 10/19 13:50 | 26 | [134] Hailey Baptiste v Raluca Georgiana Serban [170] | 7-6,6-7,4-6 | |
| ITF W80 Macon | 10/17 20:20 | 25 | [134] Hailey Baptiste v Louisa Chirico [256] | 6-0,6-2 | |
| ITF W60 Rome, GA | 10/04 14:00 | 25 | Victoria Hu v Hailey Baptiste | Cancelled | |
| ITF W60 Templeton | 09/28 21:05 | 26 | [310] McCartney Kessler v Hailey Baptiste [137] | 3-6,6-3,6-1 | |
| ITF W60 Templeton | 09/28 01:00 | 25 | [368] Veronika Miroshnichenko v Hailey Baptiste [137] | 6-7,6-1,4-6 | |
| WTA Guadalajara | 09/20 17:00 | 26 | [174] Hailey Baptiste v Caroline Garcia [11] | 5-7,4-6 | |
| WTA Guadalajara | 09/18 18:30 | 25 | [36] Karolína Plíšková v Hailey Baptiste [174] | 6-7,7-5,6-7 | |
| WTA Guadalajara | 09/17 18:50 | 24 | Hailey Baptiste v Lya I F Olivares | 6-2,6-1 | |
| WTA San Diego | 09/10 22:20 | 19 | [77] Magdalena Frech v Hailey Baptiste [171] | 6-4,6-7,6-4 | |
| WTA San Diego | 09/10 02:25 | 14 | [393] Victoria Hu v Hailey Baptiste [171] | 4-6,0-6 | |
| US Open - ženy | 08/23 15:00 | 14 | [85] Diana Shnaider v Hailey Baptiste [171] | 6-3,6-4 | |
| WTA Stanford | 08/14 20:50 | 25 | [170] Hailey Baptiste v Moyuka Uchijima [191] | 6-7,2-6 | |
| WTA Stanford | 08/13 19:35 | 19 | [174] Hailey Baptiste v Mai Hontama [184] | 6-3,2-6,2-6 |
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.