Ground: Hardcourt outdoor
| ITF Thailand F9 | 2015/06/14 04:25 | Issei Okamura v Itzstein, Zach | 6-3,5-7,5-7 |
| ITF Thailand F9 | 2015/06/13 05:00 | Itzstein, Zach v Klaoklang, Marut | 7-5,6-0 |
| ITF Thailand F9 | 2015/04/28 03:00 | Itzstein, Zach v Sornbutnark, Warit | 4-6,6-1,3-6 |
| ITF Thailand F9 | 2015/04/26 05:00 | Itzstein, Zach v Tanasugarn, Chaleechan | 6-4,6-0 |
| ITF Thailand F9 | 2015/04/25 04:00 | Nagao, Katsuki v Itzstein, Zach | 5-7,3-6 |
| ITF Thailand F9 | 2015/04/21 05:50 | Isarow, Pruchya v Itzstein, Zach | 6-3,6-3 |
| ITF Thailand F9 | 2015/04/19 05:00 | Itzstein, Zach v Kawin, Patcharapol | 7-6,6-1 |
| ITF Thailand F9 | 2015/04/18 07:30 | Patrombon, Jeson v Itzstein, Zach | 6-7,2-6 |
| ITF China F6 | 2015/06/04 02:00 | Onishi, Ken v Giraldi Requena, Marcos | 4-6,4-6 |
| ITF China F6 | 2015/06/02 06:00 | Onishi, Ken v Wang, Aoxiong | 7-6,6-4 |
| ITF China F6 | 2015/05/26 02:00 | Onishi, Ken v Kim, Young Seok | 3-6,5-7 |
| ITF China F6 Qual | 2015/05/24 02:00 | Onishi, Ken v Aoran Wang | 6-4,6-4 |
| ITF Thailand F9 | 2015/04/28 05:15 | Christopher O'Connell v Onishi, Ken | 7-6,6-2 |
| ITF Thailand F9 | 2015/04/26 06:00 | Kaewsuto, Chayanon v Onishi, Ken | 6-4,1-6,2-6 |
| ITF Japan F2 | 2015/03/15 01:00 | Tanuma, Ryota v Onishi, Ken | 2-6,6-4,3-6 |
| ITF Japan F1 | 2015/03/13 01:00 | Onishi, Ken v Kibi, Yuya | 6-2,2-6,4-6 |