Ground: Hardcourt outdoor
| ITF Japan F3 | 2015/03/21 02:30 | Issei Okamura v Watanuki, Keisuke | 6-2,6-3 |
| ITF Japan F2 | 2015/03/14 00:30 | Moritani, Soichiro v Watanuki, Keisuke | 6-4,6-2 |
| ITF Japan F1 | 2015/03/09 00:40 | Chaplin, Jarryd v Watanuki, Keisuke | 6-4,4-6,7-6 |
| ITF Turkey F34 | 2014/09/28 07:00 | Nagao, Katsuki v Watanuki, Keisuke | 6-3,5-7,7-6 |
| ITF Turkey F34 | 2014/09/27 07:00 | Watanuki, Keisuke v Shchaya-Zubrov, Pavel | 6-0,6-4 |
| ITF Turkey F32 | 2014/09/17 11:20 | Watanuki, Keisuke v Antoine Bellier | 1-6,3-6 |
| ITF Turkey F31 | 2014/09/10 08:30 | Watanuki, Keisuke v Scholtz, Nicolaas | 3-6,1-6 |
| ITF Turkey F31 | 2014/09/08 07:30 | Watanuki, Keisuke v Ren Nakamura | 6-3,6-0 |
| ITF Great Britain F5 | 2015/03/23 10:30 | Marshall Tutu v Stefan Frljanic | 6-1,6-1 |
| ITF Great Britain F4 | 2015/03/15 10:00 | Stefan Frljanic v Shabib, Mohamed | 3-6,0-6 |
| ITF Canada F2 Qual | 2015/03/09 14:00 | Reinwein, Sami v Stefan Frljanic | 6-4,6-3 |
| ITF Canada F1 Qual | 2015/03/02 16:50 | Jenkins, Jarmere v Stefan Frljanic | 6-0,6-3 |
| ITF Canada F1 Qual | 2015/02/28 15:00 | Stefan Frljanic v Harper-Griffith, Levar | 6-3,6-2 |
| ITF Portugal F1 | 2015/02/22 10:30 | Marsalek, James v Stefan Frljanic | 6-1,6-3 |
| ITF Portugal F1 | 2015/02/21 10:00 | Stefan Frljanic v Castanho Ribeiro, Alexandre | 7-5,0-6,6-1 |
| ITF Tunisia F5 | 2015/02/08 12:00 | Stefan Frljanic v Aswat, Imran | 4-6,2-6 |