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Chiaki Okadaue vs. Ksenia Lykina - head to head matches
| 14.07.14 | 1st round | Chiaki Okadaue | Ksenia Lykina | 6-0, 6-3 | match details |  Granby | Hard |
| 04.05.09 | 1st round | Ksenia Lykina | Chiaki Okadaue | 6-3, 6-4 | match details |  Fukuoka | Carpet |
Chiaki Okadaue form & Ksenia Lykina form
Chiaki Okadaue - last matches
| Toyota - Carpet | ||||
| 23.11.15 q 1 | vs. Cristina Sanchez-Quintanar | 0-6, 1-6 |  | match details |
| Tokyo - Hard | ||||
| 16.11.15 q 1 | vs. Noppawan Lertcheewakarn | 5-7, 6-1, 6-4 |  | match details |
| 16.11.15 q 2 | vs. Aiko Yoshitomi | 1-6, 2-6 | | match details |
| Hamamatsu - Grass | ||||
| 19.10.15 1st round | vs. Yurina Koshino | 2-6, 5-7 | | match details |
| Makinohara - Grass | ||||
| 12.10.15 1st round | vs. Kanae Hisami | 2-6, 6-4, 1-6 | | match details |
| Kyoto - I. hard | ||||
| 07.09.15 1st round | vs. Midori Yamamoto | 6-4, 7-63 | | match details |
| 07.09.15 2nd round | vs. Chihiro Takayama | 3-6, 6-3, 6-2 | | match details |
| 07.09.15 1/4 | vs. Sachie Ishizu | 1-6, 2-6 | | match details |
| Noto - Carpet | ||||
| 31.08.15 1st round | vs. Ching-Wen Hsu | 7-64, 3-6, 2-6 | | match details |
| Tsukuba - Hard | ||||
| 24.08.15 qual. | vs. Yukina Saigo | 6-4, 6-4 | | match details |
| 24.08.15 1st round | vs. Su Jeong Jang | 6-72, 6-4, 5-7 | | match details |
| 24.08.15 q 1 | vs. Kanako Osafune | 6-1, 6-2 | | match details |
 Gimcheon - Hard | ||||
| 17.08.15 1/4 | vs. Kyoka Okamura | 4-6, 6-4, 4-6 | | match details |
| 17.08.15 1st round | vs. Mi Jeong Kwon | 7-5, 6-3 | | match details |
| 17.08.15 2nd round | vs. Sang Hee Park | 6-1, 6-0 | | match details |
| Gimcheon - Hard | ||||
| 10.08.15 1st round | vs. Gayeong Back | 6-1, 6-1 | | match details |
| 10.08.15 1/4 | vs. So-Ra Lee | 3-6, 7-63, 4-6 | | match details |
| 10.08.15 2nd round | vs. Hyejin Lee | 6-1, 6-3 | | match details |
 Hong Kong - Hard | ||||
| 27.07.15 1st round | vs. Pei-Chi Lee | 6-2, 4-6, 6-1 | | match details |
| 27.07.15 2nd round | vs. Ji-Hee Choi | 1-6, 2-6 | | match details |
| Hong Kong - Hard | ||||
| 20.07.15 1st round | vs. Prerna Bhambri | 4-6, 6-3, 2-6 | | match details |
| Kashiwa - Hard | ||||
| 08.06.15 1st round | vs. Kanae Hisami | 7-65, 6-2 | | match details |
| 08.06.15 2nd round | vs. Ayaka Okuno | 0-6, 0-2, - Chiaki Okadaue - retired | | match details |
| Tokyo Ariake - Hard | ||||
| 01.06.15 1st round | vs. Risa Ushijima | 4-6, 4-6 | | match details |
| Karuizawa - Grass | ||||
| 18.05.15 1st round | vs. Akari Inoue | 3-6, 6-3, 6-79 | | match details |
| Kurume - Grass | ||||
| 11.05.15 q 1 | vs. Miki Miyamura | 3-6, 6-1, 6-1 | | match details |
| 11.05.15 q 2 | vs. Abbie Myers | 7-62, 6-3 | | match details |
| 11.05.15 qual. | vs. Nicha Lertpitaksinchai | 6-3, 6-3 | | match details |
| 11.05.15 1st round | vs. Miyabi Inoue | 7-63, 3-6, 4-6 | | match details |
| Fukuoka - Grass | ||||
| 04.05.15 q 2 | vs. Mai Minokoshi | 2-6, 4-6 | | match details |
Ksenia Lykina - last matches
 Namangan - Hard | ||||
| 07.06.18 1/4 | vs. Kaja Juvan | 6-4, 6-75, 3-6 | | match details |
| 06.06.18 2nd round | vs. Ekaterina Yashina | 5-7, 6-3, 6-4 | | match details |
| 05.06.18 1st round | vs. Daria Lodikova | 6-1, 6-1 | | match details |
| Kurume - Carpet | ||||
| 19.05.18 1/2 | vs. Ayano Shimizu | 6-73, 0-6 | | match details |
| 18.05.18 1/4 | vs. Haruka Kaji | 2-6, 6-3, 6-4 | | match details |
| 17.05.18 2nd round | vs. Misa Eguchi | 6-0, 6-3 | | match details |
| 15.05.18 1st round | vs. Junri Namigata | 2-6, 6-2, 6-1 | | match details |
| Fukuoka - Carpet | ||||
| 13.05.18 fin | vs. Katie Boulter | 7-5, 4-6, 2-6 | | match details |
| 12.05.18 1/2 | vs. Arina Rodionova | 6-1, 6-4 | | match details |
| 11.05.18 1/4 | vs. Katy Dunne | 6-2, 6-1 | | match details |
| 10.05.18 2nd round | vs. Olivia Tjandramulia | 6-4, 6-1 | | match details |
| 09.05.18 1st round | vs. Gabriella Taylor | 6-73, 6-1, 6-2 | | match details |
| Gifu - Hard | ||||
| 02.05.18 1st round | vs. Gabriella Taylor | 3-6, 4-6 | | match details |
| Karshi - Hard | ||||
| 25.04.18 2nd round | vs. Margarita Gasparyan | 6-74, 5-7 | | match details |
| 23.04.18 1st round | vs. Albina Khabibulina | 6-1, 6-2 | | match details |
| Osaka - Hard | ||||
| 13.04.18 1/4 | vs. Na-Lae Han | 2-6, 6-4, 1-6 | | match details |
| 12.04.18 2nd round | vs. Eri Hozumi | 7-67, 6-2 | | match details |
| 10.04.18 1st round | vs. Erika Sema | 6-1, 6-2 | | match details |
| Kashiwa - Hard | ||||
| 05.04.18 2nd round | vs. Bianca Vanessa Andreescu | 5-7, 3-6 | | match details |
| 03.04.18 1st round | vs. Kurumi Nara | 3-6, 7-5, 7-5 | | match details |
| 02.04.18 qual. | vs. Ramu Ueda | 6-2, 7-65 | | match details |
| 01.04.18 q 1 | vs. Ji-Hee Choi | 6-3, 3-6, 6-2 | | match details |
| Kofu - Hard | ||||
| 28.03.18 1st round | vs. Shiho Akita | 6-73, 6-4, 3-6 | | match details |
| 26.03.18 qual. | vs. Yuki Kristina Chiang | 7-5, 7-5 | | match details |
| 25.03.18 q 2 | vs. Ayumi Koshiishi | 7-5, 6-75, 6-3 | | match details |
| 24.03.18 q 1 | vs. Chihiro Takayama | 7-62, 6-3 | | match details |
 Kazan - I. hard | ||||
| 13.03.18 1st round | vs. Aleksandra Kulik | 6-4, 2-6, 6-76 | | match details |
| Toyota - Carpet | ||||
| 16.11.17 2nd round | vs. Dalma Galfi | 5-7, 3-6 | | match details |
| 14.11.17 1st round | vs. Dejana Radanovic | 6-3, 6-2 | | match details |
 Hua Hin - Hard | ||||
| 08.11.17 2nd round | vs. Belinda Bencic | 2-6, 4-6 | | match details |