| WTA Charleston | 04/03 23:15 | 25 | [20] Emma Navarro v Katie Volynets [110] | 6-1,6-1 | |
| WTA Charleston | 04/01 19:00 | 24 | [54] Arantxa Rus v Katie Volynets [110] | 2-6,7-6,6-7 | |
| WTA Charleston | 03/31 19:35 | 19 | [121] Katie Volynets v Ann Li [163] | 2-6,6-1,6-2 | |
| WTA Charleston | 03/30 15:00 | 14 | [121] Katie Volynets v Katherine Sebov [178] | 6-3,6-2 | |
| WTA Miami | 03/23 18:00 | 24 | [14] Jasmine Paolini v Katie Volynets [121] | 7-6,7-5 | |
| WTA Miami | 03/20 22:40 | 23 | [121] Katie Volynets v Sofia Kenin [58] | 6-2,4-6,6-3 | |
| WTA Miami | 03/18 18:55 | 15 | [88] Yanina Wickmayer v Katie Volynets [121] | 6-3,3-6,3-6 | |
| WTA Miami | 03/17 20:45 | 14 | [131] Katie Volynets v Renata Zarazua [101] | 7-5,4-6,6-1 | |
| WTA Indian Wells | 03/11 01:00 | 25 | [204] Caroline Wozniacki v Katie Volynets [131] | 6-2,4-6,6-0 | |
| WTA Indian Wells | 03/09 02:10 | 24 | [131] Katie Volynets v Ons Jabeur [6] | 6-4,6-4 | |
| WTA Indian Wells | 03/06 21:00 | 23 | [38] Mirra Andreeva v Katie Volynets [131] | 5-7,5-7 | |
| WTA Austin | 02/29 20:05 | 26 | [48] Danielle Collins v Katie Volynets [112] | 4-6,7-6,6-0 | |
| WTA Austin | 02/27 21:30 | 25 | [112] Katie Volynets v Renata Zarazua [102] | 6-4,7-6 | |
| WTA Mumbai | 02/10 09:00 | 28 | [113] Katie Volynets v Storm Hunter [150] | 4-6,6-7 | |
| WTA Mumbai | 02/09 09:00 | 27 | [113] Katie Volynets v Sohyun Park [306] | 6-1,6-2 | |
| WTA Mumbai | 02/08 10:30 | 26 | [113] Katie Volynets v Rutuja Bhosale [346] | 7-6,2-6,6-1 | |
| WTA Mumbai | 02/06 13:20 | 25 | [113] Katie Volynets v Ankita Raina [223] | 6-4,6-2 | |
| WTA Hua Hin | 02/02 12:35 | 27 | [78] Yafan Wang v Katie Volynets [125] | 1-6,6-3,7-6 | |
| WTA Hua Hin | 02/01 07:00 | 26 | [125] Katie Volynets v Tatjana Maria [44] | 5-7,6-2,6-2 | |
| WTA Hua Hin | 01/30 07:00 | 25 | [97] Tamara Zidansek v Katie Volynets [125] | 2-6,2-6 | |
| Australian Open Women | 01/15 09:00 | 23 | [75] Anna Kalinskaya v Katie Volynets [103] | 6-3,3-6,6-2 | |
| Australian Open Women | 01/11 23:00 | 19 | [103] Katie Volynets v Julia Riera [123] | 3-6,7-6,7-5 | |
| Australian Open Women | 01/10 06:35 | 15 | [103] Katie Volynets v Carol Zhao [226] | 6-3,6-1 | |
| Australian Open Women | 01/08 23:00 | 14 | [103] Katie Volynets v Suzan Lamens [205] | 7-6,7-6 | |
| WTA Canberra | 01/05 01:05 | 28 | [108] Katie Volynets v Harriet Dart [120] | 5-7,6-3,5-7 | |
| WTA Canberra | 01/03 23:00 | 27 | [108] Katie Volynets v Anna Bondar [118] | 6-2,6-3 | |
| WTA Canberra | 01/03 02:50 | 26 | [431] Kaylah McPhee v Katie Volynets [108] | 2-6,2-6 | |
| WTA Canberra | 01/01 05:55 | 25 | [114] Elizabeth Mandlik v Katie Volynets [108] | 2-6,0-6 | |
| WTA Midland | 11/01 00:10 | 25 | [108] Katie Volynets v Tatiana Prozorova [201] | 6-4,4-6,2-6 | |
| WTA Tampico | 10/27 20:00 | 27 | [108] Katie Volynets v Anna Kalinskaya [115] | 3-6,1-6 |