Round: 26 Ground: Clay
| ITF Hungría F2 | 2017/05/16 09:25 | Michal Schmid v Ken Onishi | 6-2,4-6,4-6 |
| ITF Hungría F1 | 2017/05/11 11:40 | Attila Balazs v Ken Onishi | 6-2,6-2 |
| ITF Hungría F1 | 2017/05/10 08:00 | Alexander Ovcharov v Ken Onishi | 1-6,3-6 |
| ITF Hungría F1 | 2017/05/08 08:00 | Ken Onishi v Aljaz Radinski | 6-3,7-5 |
| ITF Japón F5 | 2017/04/03 06:20 | Ken Onishi v Ryota Tanuma | 6-7,2-6 |
| ITF Japón F4 | 2017/03/30 01:00 | Ken Onishi v Yosuke Watanuki | 2-6,5-7 |
| ITF Japón F4 | 2017/03/29 01:00 | Masaya Kobayashi v Ken Onishi | 4-6,6-7 |
| Challenger de Bangkok 2 - Clasificación | 2017/01/07 08:15 | Ken Onishi v Jimmy Wang | 1-6,4-6 |
| ITF Hungría F2 | 2017/05/16 09:25 | Tomislav Jotovski v Domagoj Biljesko | 6-4,5-7,6-2 |
| ITF Turquía F16 | 2017/04/27 07:00 | Alexander Lazov v Tomislav Jotovski | 6-3,6-3 |
| ITF Turquía F15 | 2017/04/18 07:00 | Thiago Seyboth Wild v Tomislav Jotovski | 6-4,6-4 |
| Copa Davis | 2017/04/08 11:40 | Tomislav Jotovski v Christophe Tholl | 6-2,6-2 |
| Copa Davis | 2017/04/07 10:10 | Tomislav Jotovski v Birkir Gunnarsson | 6-0,6-1 |
| Copa Davis | 2017/04/06 10:15 | Tomislav Jotovski v Matthew Asciak | 3-6,6-3,2-6 |
| ITF Túnez F11 | 2017/03/23 08:30 | Nicolas Santos v Tomislav Jotovski | 6-1,6-4 |
| ITF Túnez F11 | 2017/03/21 11:30 | Tomislav Jotovski v Youssef Dabbabi | 6-2,6-1 |