| WTA - Vancouver | 08/15 20:10 | 25 | [187] Despina Papamichail v Catherine Harrison [251] | 1-6,3-6 | |
| WTA - Vancouver | 08/14 18:50 | 19 | [255] Catherine Harrison v Maegan Manasse [463] | 6-7,7-6,6-2 | |
| WTA - Vancouver | 08/13 17:00 | 14 | [194] Nao Hibino v Catherine Harrison [255] | Retired | |
| WTA - Toronto | 08/06 20:20 | 14 | [279] Storm Sanders v Catherine Harrison [237] | 6-0,7-5 | |
| WTA - Toronto | 08/06 19:30 | 14 | Ludmilla Samsonova v Catherine Harrison | Cancelled | |
| ITF W25 - Dallas | 07/29 15:00 | 26 | Catherine Harrison v Hina Inoue | Cancelled | |
| ITF W25 - Dallas | 07/27 19:00 | 25 | Catherine Harrison v Eleana Yu | Cancelled | |
| ITF W60 - Evansville | 07/23 15:00 | 28 | [247] Catherine Harrison v Ashlyn Krueger [314] | 0-6,6-7 | |
| ITF W60 - Evansville | 07/22 19:35 | 27 | [291] Katherine Sebov v Catherine Harrison [247] | 3-6,2-6 | |
| ITF W60 - Evansville | 07/22 14:00 | 26 | [247] Catherine Harrison v Maegan Manasse [485] | 6-3,7-5 | |
| ITF W60 - Evansville | 07/20 13:30 | 25 | [247] Catherine Harrison v Peyton Stearns [414] | 7-6,7-5 | |
| Wimbledon - Kvinder | 06/30 10:00 | 24 | [44] Ajla Tomljanovic v Catherine Harrison [262] | 6-2,6-2 | |
| Wimbledon - Kvinder | 06/28 10:00 | 23 | [262] Catherine Harrison v Arantxa Rus [86] | 6-1,6-4 | |
| Wimbledon - Kvinder | 06/23 14:15 | 19 | [151] Yue Yuan v Catherine Harrison [264] | 1-6,6-7 | |
| Wimbledon - Kvinder | 06/22 15:30 | 15 | [264] Catherine Harrison v Ysaline Bonaventure [148] | 7-5,6-1 | |
| Wimbledon - Kvinder | 06/21 11:05 | 14 | [264] Catherine Harrison v Eden Silva [341] | 6-1,7-5 | |
| WTA - Birmingham | 06/11 10:00 | 14 | [267] Jana Fett v Catherine Harrison [259] | 6-1,6-7,6-0 | |
| WTA - Rabat | 05/16 14:05 | 25 | [87] Kristina Kucova v Catherine Harrison [265] | 6-2,6-0 | |
| WTA - Rom | 05/07 16:30 | 14 | [269] Catherine Harrison v Elina Avanesyan [145] | 5-7,5-7 | |
| ITF W100 - Bonita Springs | 05/03 16:35 | 54 | Catherine Harrison v Sonya Macavei | 3-6,6-2,5-10 | |
| ITF W100 - Charleston | 04/27 13:55 | 25 | [105] Irina Maria Bara v Catherine Harrison [269] | 7-5,7-6 | |
| ITF W100 - Charleston | 04/26 13:50 | 54 | [269] Catherine Harrison v Christina Rosca [263] | 7-5,5-7,10-6 | |
| ITF W100 - Charleston | 04/25 13:50 | 54 | Catherine Harrison v Whitley Pate | 6-3,6-1 | |
| ITF - W25 Orlando | 04/22 13:55 | 27 | Catherine Harrison v Alexis Blokhina | 5-7,6-3,4-6 | |
| ITF - W25 Orlando | 04/21 13:50 | 26 | [267] Catherine Harrison v Aldila Sutjiadi [352] | 6-2,2-6,7-6 | |
| ITF - W25 Orlando | 04/20 14:00 | 25 | [267] Catherine Harrison v Francoise Abanda [470] | 6-2,6-4 | |
| ITF W100 - Palm Harbor | 04/13 20:20 | 25 | [247] Kurumi Nara v Catherine Harrison [266] | 7-6,1-6,6-4 | |
| ITF W100 - Palm Harbor | 04/12 15:50 | 54 | [266] Catherine Harrison v Maria Jose Portillo Ramirez [500] | 2-6,1-6 | |
| ITF W100 - Palm Harbor | 04/11 19:30 | 54 | Catherine Harrison v Erica Oosterhout | 6-4,6-2 | |
| WTA - Charleston | 04/03 15:00 | 19 | [41] Nadiia Kichenok v Catherine Harrison [269] | 6-1,6-0 |