| WTA Bad Homburg | 06/24 09:00 | 19 | [87] Kateryna Baindl v Katie Volynets [121] | 6-2,0-6,6-4 | |
| WTA Berlin | 06/17 08:30 | 45 | [106] Katie Volynets v Susan Bandecchi [388] | 3-6,4-6 | |
| WTA Hertogenbosch | 06/13 14:10 | 25 | [106] Katie Volynets v Caty McNally [62] | 2-6,1-6 | |
| French Open Women | 05/28 18:00 | 23 | [15] Liudmila Samsonova v Katie Volynets [92] | 6-0,6-1 | |
| WTA Strasbourg | 05/22 08:00 | 25 | Katie Volynets v Elise Mertens | Cancelled | |
| WTA Paris | 05/20 13:15 | 28 | [102] Katie Volynets v Caty McNally [62] | 1-6,6-4,2-6 | |
| WTA Paris | 05/19 14:30 | 27 | [102] Katie Volynets v Alize Cornet [64] | 7-5,2-6,6-2 | |
| WTA Paris | 05/18 11:35 | 26 | [44] Aliaksandra Sasnovich v Katie Volynets [102] | 3-6,3-6 | |
| WTA Paris | 05/16 08:30 | 25 | [180] Carol Zhao v Katie Volynets [102] | 0-6,6-7 | |
| WTA Paris | 05/16 08:00 | 25 | Leolia Jeanjean v Katie Volynets | Cancelled | |
| WTA - Rome | 05/10 15:45 | 23 | [102] Katie Volynets v Sorana Cirstea [34] | 6-2,3-6,4-6 | |
| WTA - Saint-Malo | 05/06 11:30 | 28 | [103] Katie Volynets v Greet Minnen [173] | 3-6,3-6 | |
| WTA - Saint-Malo | 05/05 13:15 | 27 | [100] Magdalena Frech v Katie Volynets [103] | 3-6,3-6 | |
| WTA - Saint-Malo | 05/03 09:00 | 26 | [103] Katie Volynets v Zanevska, Maryna [75] | 2-6,6-4,7-5 | |
| WTA - Saint-Malo | 05/01 12:30 | 25 | [103] Katie Volynets v Margaux Rouvroy [292] | 7-5,6-2 | |
| WTA - Madrid | 04/25 15:15 | 23 | [58] Linda Fruhvirtova v Katie Volynets [103] | 6-3,7-5 | |
| WTA - Stuttgart | 04/16 14:50 | 19 | [75] Katie Volynets v Cristina Bucsa [77] | 5-7,7-6,6-7 | |
| WTA - Stuttgart | 04/15 15:05 | 14 | [75] Katie Volynets v Dayana Yastremska [147] | 2-6,7-6,6-3 | |
| WTA - Miami | 03/19 15:00 | 14 | [74] Katie Volynets v Kaja Juvan [135] | 4-6,2-6 | |
| WTA - Indian Wells | 03/08 22:40 | 23 | [74] Katie Volynets v Shelby Rogers [41] | 4-6,6-4,1-6 | |
| WTA - Austin | 03/05 00:00 | 28 | [88] Varvara Gracheva v Katie Volynets [92] | 6-4,5-7,6-4 | |
| WTA - Austin | 03/03 19:05 | 27 | [92] Katie Volynets v Peyton Stearns [137] | 7-5,6-3 | |
| WTA - Austin | 03/01 17:00 | 26 | [28] Anastasia Potapova v Katie Volynets [92] | 7-5,2-6,5-7 | |
| WTA - Austin | 02/27 16:30 | 25 | [92] Katie Volynets v Alison Riske [58] | 6-3,3-6,6-0 | |
| WTA Merida | 02/22 22:40 | 26 | [92] Caty McNally v Katie Volynets [96] | 6-3,6-0 | |
| WTA Merida | 02/21 00:35 | 25 | [96] Katie Volynets v Lucia Bronzetti [65] | 4-6,6-2,6-1 | |
| Open d'Australie - Femmes | 01/21 02:00 | 25 | [22] Shuai Zhang v Katie Volynets [113] | 6-3,6-2 | |
| Open d'Australie - Femmes | 01/19 00:00 | 24 | [113] Katie Volynets v Veronika Kudermetova [9] | 6-4,2-6,6-2 | |
| Open d'Australie - Femmes | 01/17 01:35 | 23 | [113] Katie Volynets v Rodina, Evgeniya [445] | 6-3,6-2 | |
| Open d'Australie - Femmes | 01/12 01:50 | 19 | [115] Katie Volynets v Kristina Mladenovic [152] | 6-3,4-6,6-2 |