| ITF W100 Charleston | 11/05 15:55 | 26 | [133] Catherine Bellis v Katarzyna Kawa [130] | 6-7,4-6 | |
| ITF W100 Charleston | 11/04 15:00 | 25 | [102] Aliona Bolsova Zadoinov v Catherine Bellis [133] | 6-7,0-6 | |
| ITF W80 Tyler | 10/31 17:00 | 28 | Catherine Bellis v Marta Kostyuk | Walkover | |
| ITF W80 Tyler | 10/30 22:35 | 27 | [141] Catherine Bellis v Aliona Bolsova Zadoinov [101] | 6-0,2-6,7-5 | |
| ITF W80 Tyler | 10/30 17:00 | 26 | [141] Catherine Bellis v Jamie Loeb [287] | 3-6,6-1,6-2 | |
| ITF W80 Tyler | 10/29 22:10 | 25 | [108] Anna-Lena Friedsam v Catherine Bellis [141] | 3-6,3-6 | |
| ITF W80 Macon | 10/25 16:50 | 29 | [113] Marta Kostyuk v Catherine Bellis [173] | Retired | |
| ITF W80 Macon | 10/24 15:00 | 28 | [173] Catherine Bellis v Varvara Lepchenko [186] | Retired | |
| ITF W80 Macon | 10/23 17:45 | 27 | [173] Catherine Bellis v Sara Errani [137] | 6-0,6-3 | |
| ITF W80 Macon | 10/22 13:45 | 26 | [223] Gabriela Talaba v Catherine Bellis [173] | 1-6,3-6 | |
| ITF W80 Macon | 10/21 18:45 | 25 | [173] Catherine Bellis v Lara Arruabarrena [160] | 6-3,7-5 | |
| French Open - ženy | 09/28 10:55 | 23 | [171] Catherine Bellis v Bernarda Pera [62] | 6-7,1-6 | |
| US Open - ženy | 09/02 16:55 | 24 | [188] Catherine Bellis v Jennifer Brady [41] | 1-6,2-6 | |
| US Open - ženy | 09/01 00:05 | 23 | [188] Catherine Bellis v Tamara Korpatsch [118] | 6-7,6-3,6-2 | |
| WTA New York | 08/24 22:45 | 25 | [249] Catherine Bellis v Aryna Sabalenka [11] | 7-6,4-6,5-7 | |
| WTA New York | 08/23 15:00 | 24 | [249] Catherine Bellis v Oceane Dodin [118] | 6-2,3-6,7-6 | |
| WTA New York | 08/21 16:30 | 19 | [121] Ysaline Bonaventure v Catherine Bellis [249] | 6-4,4-6,1-6 | |
| WTA New York | 08/20 18:30 | 44 | [249] Catherine Bellis v Madison Brengle [82] | 6-3,7-6 | |
| WTA Lexington | 08/14 15:00 | 27 | [302] Catherine Bellis v Jil Teichmann [63] | 2-6,4-6 | |
| WTA Lexington | 08/13 19:40 | 26 | [302] Catherine Bellis v Jessica Pegula [81] | 6-3,6-2 | |
| WTA Lexington | 08/11 15:00 | 25 | Francesca Di Lorenzo v Catherine Bellis | 1-6,2-6 | |
| WTA Lexington | 08/11 15:00 | 25 | Amanda Anisimova v Catherine Bellis | Cancelled | |
| Australian Open - ženy | 01/25 04:50 | 25 | Elise Mertens v Catherine Bellis | 6-1,6-7,6-0 | |
| Australian Open - ženy | 01/23 03:30 | 24 | Catherine Bellis v Karolina Muchova | 6-4,6-4 | |
| Australian Open - ženy | 01/21 07:05 | 23 | Catherine Bellis v Tatjana Maria | 6-0,6-2 | |
| WTA Hobart | 01/15 00:00 | 26 | Veronika Ku'metova v Catherine Bellis | 7-6,6-1 | |
| WTA Hobart | 01/14 00:00 | 25 | Catherine Bellis v Marie Bouzková | 3-6,7-6,6-3 | |
| WTA Auckland | 01/06 02:05 | 25 | Catherine Bellis v Jessica Pegula | 0-6,4-6 | |
| WTA Houston | 11/15 16:00 | 26 | Catherine Bellis v Kirsten Flipkens | 4-6,4-6 | |
| WTA Houston | 11/12 19:45 | 25 | Varvara Lepchenko v Catherine Bellis | 4-6,6-4,6-7 |