| ITF - Orlando W25 | 04/20 14:00 | 25 | [267] Catherine Harrison v Francoise Abanda [470] | 6-2,6-4 | |
| ITF - Palm Harbor W100 | 04/13 20:20 | 25 | [247] Kurumi Nara v Catherine Harrison [266] | 7-6,1-6,6-4 | |
| ITF - Palm Harbor W100 | 04/12 15:50 | 54 | [266] Catherine Harrison v Maria Jose Portillo Ramirez [500] | 2-6,1-6 | |
| ITF - Palm Harbor W100 | 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 | |
| WTA Charleston | 04/02 14:00 | 14 | Bianca J Fernandez v Catherine Harrison | 3-6,1-6 | |
| WTA Monterrey | 02/27 17:00 | 19 | [265] Catherine Harrison v Jule Niemeier [114] | 3-6,3-6 | |
| WTA Monterrey | 02/26 19:15 | 14 | [265] Catherine Harrison v Storm Sanders [163] | 6-4,7-6 | |
| ITF - Glasgow W25 | 02/17 11:35 | 26 | [295] Justina Mikulskyte v Catherine Harrison [262] | 6-4,6-2 | |
| ITF - Glasgow W25 | 02/15 11:25 | 25 | Nadia Rawson v Catherine Harrison | 4-6,2-6 | |
| ITF - Birmingham W25 | 02/08 12:45 | 25 | Isabelle Lacy v Catherine Harrison | 6-3,5-7,6-3 | |
| ITF - Rome, GA W60 | 02/01 17:10 | 54 | Catherine Harrison v Dalayna Hewitt | 3-6,3-6 | |
| ITF - Rome, GA W60 | 01/31 20:15 | 54 | Catherine Harrison v Reese Brantmeier | 6-4,7-6 | |
| ITF - Orlando W60 | 01/28 15:50 | 26 | Catherine Harrison v Qinwen Zheng | 1-6,2-6 | |
| ITF - Orlando W60 | 01/27 19:30 | 25 | [257] Catherine Harrison v Sophie Chang [391] | 6-7,7-6,6-1 | |
| ITF - Orlando W60 | 01/25 15:00 | 54 | [257] Catherine Harrison v Rasheeda McAdoo [231] | 6-4,6-1 | |
| ITF - Orlando W60 | 01/24 15:00 | 54 | Catherine Harrison v Tori Kinard | 6-0,6-7,10-7 | |
| ITF - Traralgon W60 | 01/05 03:30 | 26 | [264] Catherine Harrison v Katie Volynets [180] | 3-6,0-6 | |
| ITF - Traralgon W60 | 01/04 03:40 | 25 | [288] Samantha Murray Sharan v Catherine Harrison [264] | 7-6,2-6,0-6 | |
| ITF - Traralgon W60 | 01/02 22:55 | 54 | [244] Andrea Lazaro Garcia v Catherine Harrison [264] | 6-3,1-6,3-10 | |
| ITF - Traralgon W60 | 01/02 01:15 | 54 | Jessica Board v Catherine Harrison | 1-6,1-6 | |
| WTA Midland | 11/03 16:00 | 26 | [273] Catherine Harrison v Katrina Scott [415] | 3-6,1-6 | |
| WTA Midland | 11/02 15:00 | 25 | [246] Marcela Zacarias v Catherine Harrison [273] | 4-6,6-4,3-6 | |
| WTA Midland | 11/01 16:20 | 19 | [273] Catherine Harrison v Aldila Sutjiadi [382] | 7-6,6-3 | |
| WTA Midland | 10/31 18:35 | 14 | Catherine Harrison v Alexandra Riley | 6-0,6-0 | |
| ITF - Tyler W80 | 10/28 15:55 | 26 | [144] Caty McNally v Catherine Harrison [266] | 7-5,6-3 | |
| ITF - Tyler W80 | 10/27 21:10 | 25 | Catherine Harrison v Alana Smith | 6-4,6-2 | |
| ITF - Macon W80 | 10/22 15:00 | 27 | [272] Catherine Harrison v Xiyu Wang [140] | 4-6,6-3,6-7 | |
| ITF - Macon W80 | 10/21 15:30 | 26 | [272] Catherine Harrison v Caroline Dolehide [190] | 7-5,6-1 | |
| ITF - Macon W80 | 10/20 14:00 | 25 | [107] Kristina Kucova v Catherine Harrison [272] | Retired |