| WTA Newport Beach | 01/21 21:55 | 24 | [345] Anna Danilina v Mayo Hibi [228] | 4-6,4-6 | |
| WTA Taipei | 11/11 03:45 | 64 | [243] Elena Gabriela Ruse v Mayo Hibi [220] | 7-6,2-6,6-4 | |
| WTA Luxembourg | 10/13 16:25 | 45 | [97] Kristyna Pliskova v Mayo Hibi [216] | 6-4,6-1 | |
| WTA Hong Kong | 10/06 02:00 | 45 | [213] Mayo Hibi v Viktoriya Tomova [162] | 2-6,4-6 | |
| US Open Women | 08/23 17:20 | 45 | [168] Jil Teichmann v Mayo Hibi [209] | 6-4,6-4 | |
| US Open Women | 08/21 15:00 | 44 | [239] Myrtille Georges v Mayo Hibi [209] | 1-6,2-6 | |
| WTA Washington | 07/31 03:00 | 25 | [212] Mayo Hibi v Fanny Stollar [155] | 1-6,6-7 | |
| WTA Washington Qual | 07/29 17:00 | 164 | [152] Sofya Zhuk v Mayo Hibi [198] | 6-3,7-6 | |
| WTA Washington Qual | 07/28 18:50 | 64 | Natasha Subhash v Mayo Hibi | 0-6,1-6 | |
| ITF Women Ashland | 07/25 15:15 | 25 | Maegan Manasse v Mayo Hibi | 7-6,6-0 | |
| ITF Women Berkeley | 07/20 22:25 | 27 | [64] Sofia Kenin v Mayo Hibi [187] | 6-1,6-4 | |
| ITF Women Berkeley | 07/19 19:00 | 26 | [314] Manon Arcangioli v Mayo Hibi [187] | 6-7,1-6 | |
| ITF Women Berkeley | 07/18 19:00 | 25 | Connie Ma v Mayo Hibi | 0-6,3-6 | |
| Wimbledon Women Qual | 06/28 10:00 | 46 | [116] Evgeniya Rodina v Mayo Hibi [199] | 6-2,6-4 | |
| Wimbledon Women Qual | 06/27 10:00 | 45 | [199] Mayo Hibi v Deborah Chiesa [148] | 6-3,6-1 | |
| Wimbledon Women Qual | 06/26 11:35 | 44 | [199] Mayo Hibi v Sesil Karatantcheva [195] | 1-6,6-3,6-1 | |
| ITF Women Ilkley Qual | 06/18 13:15 | 54 | [251] Maria Sanchez v Mayo Hibi [197] | 7-5,6-2 | |
| ITF Women Ilkley Qual | 06/17 13:35 | 54 | [211] Mayo Hibi v Jaqueline Adina Cristian [204] | 6-2,6-7,6-3 | |
| ITF Women Manchester | 06/15 12:50 | 27 | [114] Sara Sorribes Tormo v Mayo Hibi [211] | 5-7,6-2,6-0 | |
| ITF Women Manchester | 06/14 12:00 | 26 | [211] Mayo Hibi v Nicole Gibbs [109] | 3-6,6-0,6-0 | |
| ITF Women Manchester | 06/12 12:35 | 25 | [132] Carol Zhao v Mayo Hibi [211] | 4-6,1-6 | |
| ITF Women Incheon | 05/16 06:20 | 25 | [246] Akiko Omae v Mayo Hibi [236] | 6-3,2-6,6-4 | |
| ITF Women Goyang | 05/13 05:45 | 29 | En Shuo Liang v Mayo Hibi | 3-6,3-6 | |
| ITF Women Goyang | 05/13 02:40 | 28 | [273] Na-Lae Han v Mayo Hibi [239] | 2-6,7-5,3-6 | |
| ITF Women Goyang | 05/11 03:40 | 27 | [320] Ling Zhang v Mayo Hibi [239] | 1-6,4-6 | |
| ITF Women Goyang | 05/10 01:00 | 26 | [481] Na Ri Kim v Mayo Hibi [239] | 1-6,6-4,3-6 | |
| ITF Women Goyang | 05/09 05:45 | 25 | Yeong Won Jeong v Mayo Hibi | 0-6,3-6 | |
| ITF Women Gifu | 05/03 02:00 | 26 | [239] Mayo Hibi v Naomi Broady [128] | 0-6,4-6 | |
| ITF Women Gifu | 05/01 01:00 | 25 | Suzuka Takoi v Mayo Hibi | 0-6,3-6 | |
| ITF Women Kashiwa | 04/06 04:05 | 27 | [206] Bianca Andreescu v Mayo Hibi [211] | 6-4,6-2 |