Japan
22.09.97, 27 years
22.09.97, 27 years
Country
Birthdate
Height
Weight
Profi since
Play
Ranking's position
Points
Prize money
Birthdate
Height
Weight
Profi since
Play
Ranking's position
Points
Prize money
Japan
12.08.96, 28 years
12.08.96, 28 years
Masaya Kobayashi vs. Yuto Sakai - head to head matches
| 06.03.17 | q 2 | Masaya Kobayashi | Yuto Sakai | 7-68, 7-5 | match details |  Japan F1 | Hard |
Masaya Kobayashi form & Yuto Sakai form
Masaya Kobayashi - last matches
| M15 Karuizawa - Clay | ||||
| 26.05.19 q 1 | vs. Jake Delaney | 0-6, 5-7 |  | match details |
| M15 Kofu - Hard | ||||
| 17.03.19 q 1 | vs. Shunrou Takeshima | 2-6, 1-6 | | match details |
| M15 Nishi - Hard | ||||
| 12.03.19 qual. | vs. Gengo Kikuchi | 6-4, 5-7, 6-10 | | match details |
| 10.03.19 q 1 | vs. Ching-Mou Yu | 6-2, 6-2 |  | match details |
| Japan F8 - Carpet | ||||
| 12.06.18 1st round | vs. Gengo Kikuchi | 0-6, 1-6 | | match details |
| 11.06.18 qual. | vs. Ryuhei Azuma | 6-0, 7-5 | | match details |
| 09.06.18 q 2 | vs. Taisei Miyamoto | 6-3, 6-3 | | match details |
| 09.06.18 q 1 | vs. Steven Goh | 3-6, 6-3, 6-0 | | match details |
| Japan F7 - Clay | ||||
| 02.06.18 q 1 | vs. Kazuki Shimizu | 6-76, 3-6 | | match details |
| Japan F6 - Hard | ||||
| 08.04.18 q 2 | vs. Ryota Kishi | 2-6, 1-6 | | match details |
| 07.04.18 q 1 | vs. Kaito Muranishi | 7-5, 6-3 | | match details |
| Japan F3 - Hard | ||||
| 21.03.18 2nd round | vs. Min-Kyu Song | 1-6, - Masaya Kobayashi - retired | | match details |
| 19.03.18 1st round | vs. Takashi Saito | 6-4, 4-6, 6-4 | | match details |
| Japan F2 - Hard | ||||
| 12.03.18 1st round | vs. Kento Takeuchi | 3-6, 6-4, 3-6 | | match details |
| Japan F1 - Hard | ||||
| 05.03.18 qual. | vs. Gengo Kikuchi | 2-6, 5-7 | | match details |
| 04.03.18 q 2 | vs. Tomohiro Masabayashi | 6-1, 3-6, 7-5 | | match details |
| 03.03.18 q 1 | vs. Masahiro Fukuda | 6-2, 6-2 | | match details |
 Turkey F7 - Hard | ||||
| 21.02.18 1st round | vs. Attila Balazs | 1-6, 3-6 | | match details |
| 19.02.18 qual. | vs. Bogdan Ionut Apostol | 4-6, 6-3, 4-6 | | match details |
| 18.02.18 q 2 | vs. Michiel De Krom | 6-2, 6-1 | | match details |
| 17.02.18 q 1 | vs. Dmitry Myagkov | 6-2, 6-3 | | match details |
| Turkey F6 - Hard | ||||
| 12.02.18 qual. | vs. Sho Shimabukuro | 7-66, 3-6, 2-6 | | match details |
| 11.02.18 q 2 | vs. Felipe Meligeni Alves | 6-2, 6-1 | | match details |
| 10.02.18 q 1 | vs. Mert Alkaya | 6-3, 6-3 | | match details |
 Hong Kong - Hard | ||||
| 03.01.18 2nd round | vs. Shintaro Imai | 3-6, 0-6 | | match details |
| 01.01.18 1st round | vs. Chien-Hsun Lo | 6-3, 5-2, Chien-Hsun Lo - retired | | match details |
| 31.12.17 qual. | vs. Andrea Bessire | 7-5, 6-0 | | match details |
| 30.12.17 q 1 | vs. Tsung-Hao Huang | 7-64, 6-4 | | match details |
| Hong Kong - Hard | ||||
| 26.12.17 1st round | vs. Shintaro Imai | 1-6, 1-6 | | match details |
| 24.12.17 qual. | vs. Soichiro Moritani | 6-2, 6-2 | | match details |
Yuto Sakai - last matches
| M25 Matsuyama - Hard | ||||
| 09.04.19 1st round | vs. Rio Noguchi | 1-6, 0-6 | | match details |
| Japan F8 - Carpet | ||||
| 12.06.18 1st round | vs. Hikaru Shiraishi | 2-6, 1-6 | | match details |
| 11.06.18 qual. | vs. Yuga Tashiro | 7-5, 7-65 | | match details |
| 09.06.18 q 1 | vs. Taro Sakakibara | 6-1, 6-1 | | match details |
| 09.06.18 q 2 | vs. Arjun Mariyappa | 6-0, 6-0 | | match details |
| Japan F6 - Hard | ||||
| 08.04.18 qual. | vs. Issei Okamura | 2-6, 3-6 | | match details |
| 08.04.18 q 2 | vs. Ryuhei Azuma | 6-2, 6-2 | | match details |
| 07.04.18 q 1 | vs. Takafumi Teramoto | 6-2, 6-4 | | match details |
| Japan F3 - Hard | ||||
| 17.03.18 q 2 | vs. Kosuke Ogura | 4-6, 3-6 | | match details |
| Japan F2 - Hard | ||||
| 13.03.18 1st round | vs. Yunosuke Tanaka | 4-6, 6-4, 6-73 | | match details |
| 12.03.18 qual. | vs. Shunrou Takeshima | 6-4, 6-2 | | match details |
| 11.03.18 q 2 | vs. Gengo Kikuchi | 6-2, 6-2 | | match details |
| 10.03.18 q 1 | vs. Bang Shuo Yin | 6-3, 6-2 | | match details |
| Turkey F7 - Hard | ||||
| 21.02.18 1st round | vs. Chun Hsin Tseng | 6-4, 2-6, 1-6 | | match details |
| 19.02.18 qual. | vs. Kazuki Shimizu | 6-2, 6-3 | | match details |
| 18.02.18 q 1 | vs. Orlando Luz | 1-6, 7-64, 6-4 | | match details |
| 18.02.18 q 2 | vs. Franco Capalbo | 6-4, 6-1 | | match details |
| Turkey F6 - Hard | ||||
| 11.02.18 q 2 | vs. Andrei Stefan Apostol | 6-4, 5-7, 3-6 | | match details |
| 10.02.18 q 1 | vs. Sreten Spasic | 6-1, 6-0 | | match details |
| Hong Kong - Hard | ||||
| 31.12.17 qual. | vs. Alberto Lim | 6-76, 4-6 | | match details |
| 30.12.17 q 1 | vs. Chun-Ming Yam | 6-1, 6-0 | | match details |
| Hong Kong - Hard | ||||
| 24.12.17 qual. | vs. Chan-Yeong Oh | 3-6, 3-6 | | match details |
| 23.12.17 q 1 | vs. Congsup Congcar | 6-4, 6-4 | | match details |
| Toyota Challenger - Carpet | ||||
| 11.11.17 q 1 | vs. Masaki Osafune | 7-64, 1-6, 6-1 | | match details |
| 11.11.17 q 2 | vs. Hiroyasu Ehara | 7-60, 2-6, 3-6 | | match details |
| Kobe Challenger - I. hard | ||||
| 04.11.17 q 1 | vs. Sora Fukuda | 1-6, 3-6 | | match details |
| Japan F8 - Carpet | ||||
| 15.06.17 2nd round | vs. Yusuke Watanuki | 4-6, 6-3, 3-6 | | match details |
| 14.06.17 1st round | vs. Yohei Ono | 7-5, 6-0 | | match details |
| 12.06.17 qual. | vs. Luca Castelnuovo | 6-78, 6-4, 7-68 | | match details |
| 12.06.17 q 1 | vs. Nobuhiro Aihara | 6-0, 6-2 | | match details |