Stadium: Court 5 Round: 46 Ground: Hardcourt outdoor
| Challenger Gwangju | 2018/08/14 06:30 | Yusuke Takahashi v Zihao Xia | 2-6,6-1,2-6 |
| Challenger Jinan | 2018/08/09 08:55 | Ze Zhang v Yusuke Takahashi | 6-4,6-3 |
| Challenger Jinan | 2018/08/07 09:15 | Yusuke Takahashi v Hiroyasu Ehara | 6-4,6-3 |
| Challenger Chengdu | 2018/07/31 06:25 | Yusuke Takahashi v James Ward | 3-6,3-6 |
| Challenger Granby | 2018/07/24 18:50 | Yusuke Takahashi v Peter Polansky | 4-6,1-6 |
| Challenger Gatineau | 2018/07/17 14:00 | Yusuke Takahashi v Go Soeda | 4-6,3-6 |
| Challenger - Winnipeg | 2018/07/10 15:00 | Yusuke Takahashi v Jason Kubler | 2-6,2-6 |
| Challenger Fergana | 2018/06/18 09:05 | Yusuke Takahashi v Duckhee Lee | 6-7,1-6 |
| Challenger Zhangjiagang | 2018/09/02 07:30 | Jacopo Berrettini v Arjun Kadhe | 6-3,1-6,4-6 |
| Challenger Gwangju | 2018/08/14 01:00 | Arjun Kadhe v Alexander Bublik | 6-4,6-7,6-7 |
| Challenger Jinan | 2018/08/08 11:45 | Arjun Kadhe v James Ward | 3-6,1-6 |
| Challenger Chengdu | 2018/07/31 03:00 | Arjun Kadhe v Miliaan Niesten | 2-6,4-6 |
| Challenger Astana | 2018/07/19 06:30 | Aleksandr Nedovyesov v Arjun Kadhe | 6-3,6-7,6-4 |
| Challenger Astana Qual | 2018/07/15 04:30 | Arjun Kadhe v Khumoyun Sultanov | 1-6,6-3,2-6 |
| Challenger Astana Qual | 2018/07/14 04:00 | Arjun Kadhe v Anton Chekhov | 6-3,6-1 |
| Challenger Fergana Qual | 2018/06/17 07:35 | Arjun Kadhe v Tung-Lin Wu | 6-4,3-6,2-6 |