| ITF Japan F8 | 2014/06/27 01:00 | Keisuke Watanuki v Arata Onozawa | 3-6,4-6 |
| ITF Japan F8 | 2014/06/26 04:35 | Masaki Sasai v Keisuke Watanuki | 3-6,1-6 |
| ITF Japan F8 | 2014/06/24 01:00 | Keisuke Watanuki v Masato Shiga | 6-4,6-2 |
| ITF Japan F7 Qual | 2014/06/14 00:30 | Keisuke Watanuki v Masayoshi Ono | 6-2,6-3 |
| ITF Japan F6 | 2014/06/11 07:50 | Sho Katayama v Keisuke Watanuki | 6-3,7-5 |
| ITF Japan F6 Qual | 2014/06/09 03:00 | Keisuke Watanuki v Koichi Sano | 6-4,6-0 |
| ITF Japan F6 Qual | 2014/06/08 09:00 | David Barclay v Keisuke Watanuki | 4-6,2-6 |
| ITF Japan F3 | 2014/03/26 02:50 | Takuto Niki v Keisuke Watanuki | 6-3,6-1 |
| ITF Turkey F30 | 2014/09/03 07:35 | Hugo Nys v Ren Nakamura | 6-0,6-1 |
| ITF Canada F6 Qual | 2014/07/13 17:00 | Jarryd Chaplin v Ren Nakamura | 6-7,6-1,6-1 |
| ITF Canada F4 | 2014/07/04 01:30 | Filip Peliwo v Ren Nakamura | 6-2,6-1 |
| ITF Canada F4 | 2014/07/02 19:15 | Ren Nakamura v Patrick Davidson | 5-7,7-5,6-4 |
| ITF Canada F3 Qual | 2014/06/23 17:00 | Benjamin Mitchell v Ren Nakamura | 6-3,6-2 |
| ITF Japan F4 | 2014/04/01 01:00 | Sho Katayama v Ren Nakamura | 6-2,6-3 |