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
Masaya Kobayashi vs. Katsuki Nagao - head to head matches
| 07.03.16 | q 1 | Katsuki Nagao | Masaya Kobayashi | 6-2, 2-6, 6-3 | match details |  Japan F1 | Hard |
Masaya Kobayashi form & Katsuki Nagao 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 1 | vs. Steven Goh | 3-6, 6-3, 6-0 | | match details |
| 09.06.18 q 2 | vs. Taisei Miyamoto | 6-3, 6-3 | | 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 |
Katsuki Nagao - last matches
| Hong Kong - Hard | ||||
| 25.06.17 1st round | vs. Masato Shiga | 2-6, 2-6 | | match details |
| 26.06.17 q 1 | vs. David Barclay | 6-4, 6-2 | | match details |
| 26.06.17 qual. | vs. Leo Julien Sebaoun | 6-2, 6-1 | | match details |
| Hong Kong - Hard | ||||
| 22.06.17 1/4 | vs. Jumpei Yamasaki | 3-6, 1-6 | | match details |
| 21.06.17 1st round | vs. Ye Cong Mo | 6-2, 6-4 | | match details |
| 21.06.17 2nd round | vs. Francis Casey Alcantara | 4-6, 7-5, 1-0, Francis Casey Alcantara - retired | | match details |
| Japan F8 - Carpet | ||||
| 15.06.17 2nd round | vs. Gengo Kikuchi | 2-6, 2-6 | | match details |
| 14.06.17 1st round | vs. Taisei Ichikawa | 6-0, 6-1 | | match details |
| Japan F7 - Hard | ||||
| 05.06.17 q 1 | vs. Rimpei Kawakami | 6-71, 6-72 | | match details |
| Japan F5 - Hard | ||||
| 04.04.17 1st round | vs. Tatsuma Ito | 6-72, 4-6 | | match details |
| 03.04.17 q 1 | vs. Kazuki Shimizu | 6-3, 6-3 | | match details |
| 03.04.17 qual. | vs. Hidetoshi Owada | 6-2, 6-4 | | match details |
| Japan F4 - Hard | ||||
| 27.03.17 q 1 | vs. Ryohei Tagata | 2-6, 6-2, 6-0 | | match details |
| 27.03.17 qual. | vs. Shunrou Takeshima | 2-6, 2-6 | | match details |
| 27.03.17 q 2 | vs. Nasa Hatakeyama | 6-2, 6-3 | | match details |
| Japan F3 - Hard | ||||
| 20.03.17 q 1 | vs. Ryohei Tagata | 6-3, 6-3 | | match details |
| 20.03.17 q 2 | vs. Masamichi Imamura | 6-2, 6-1 | | match details |
| 20.03.17 qual. | vs. Jea Moon Lee | 6-74, 4-6 | | match details |
| Japan F2 - Hard | ||||
| 13.03.17 q 2 | vs. Kenta Miyoshi (1995) | 2-6, 3-6 | | match details |
| Japan F1 - Hard | ||||
| 06.03.17 q 2 | vs. Yuichiro Inui | 6-3, 6-2 | | match details |
| 06.03.17 qual. | vs. Sho Shimabukuro | 3-6, 6-73 | | match details |
| 06.03.17 q 1 | vs. Leo Julien Sebaoun | 2-6, 6-3, 6-3 | | match details |
 Korea F8 - Clay | ||||
| 06.09.16 1st round | vs. Keisuke Numajiri | 6-3, 4-6, 0-6 | | match details |
| Korea F7 - Clay | ||||
| 31.08.16 2nd round | vs. Makoto Ochi | 3-6, 2-6 | | match details |
| 30.08.16 1st round | vs. Jae-Won Choi | 6-3, 7-65 | | match details |
| Korea F6 - Clay | ||||
| 23.08.16 1st round | vs. Jae Hwan Kim | 3-6, 2-6 | | match details |
| Japan F8 - Carpet | ||||
| 15.06.16 2nd round | vs. Yuki Mochizuki | 1-6, 0-6 | | match details |
| 14.06.16 1st round | vs. Yuichi Ito | 6-2, 6-4 | | match details |
| Japan F7 - Hard | ||||
| 07.06.16 2nd round | vs. Kento Takeuchi | 4-6, 1-6 | | match details |
| 07.06.16 1st round | vs. Ryotaro Matsumura | 6-4, 6-4 | | match details |