Stadium: Center Court Round: 26 Ground: Clay
| Challenger Qujing | 2018/03/20 03:45 | N.Sriram Balaji v Zhe Li | 4-6,6-4,1-6 |
| Challenger Qujing Qual | 2018/03/18 05:45 | N.Sriram Balaji v Rui-Xuan Wang | 6-3,6-2 |
| Challenger Qujing Qual | 2018/03/17 04:30 | N.Sriram Balaji v Andreas Siljestrom | 6-3,7-5 |
| Challenger Zhuhai Qual | 2018/03/03 02:00 | Chuhan Wang v N.Sriram Balaji | 7-6,5-7,4-6 |
| Challenger Yokohama Qual | 2018/02/24 07:05 | Takuto Niki v N.Sriram Balaji | 3-6,7-6,7-5 |
| Challenger Chennai | 2018/02/12 04:30 | N.Sriram Balaji v Wishaya Trongcharoenchaikul | 4-6,6-3,5-7 |
| Challenger Quimper Qual | 2018/01/27 14:00 | N.Sriram Balaji v Yannick Vandenbulcke | 6-7,3-6 |
| Challenger Koblenz Qual | 2018/01/15 18:20 | Joris De Loore v N.Sriram Balaji | 6-7,7-5,6-3 |
| Challenger Shenzhen | 2018/03/13 02:00 | Soonwoo Kwon v Mats Moraing | 0-6,3-6 |
| Challenger Zhuhai | 2018/03/09 05:30 | Soonwoo Kwon v Hubert Hurkacz | 3-6,0-6 |
| Challenger Zhuhai | 2018/03/07 06:35 | Marcel Granollers v Soonwoo Kwon | 5-7,4-6 |
| Challenger Yokohama | 2018/02/27 01:00 | Shinji Hazawa v Soonwoo Kwon | 6-3,4-6,7-6 |
| Challenger Kyoto | 2018/02/22 04:10 | Soonwoo Kwon v Kaichi Uchida | 4-6,7-6,6-7 |
| Challenger Kyoto | 2018/02/20 07:00 | Soonwoo Kwon v Matteo Donati | 6-4,7-6 |
| Davis Cup | 2018/02/02 05:00 | Aisam-Ul-Haq Qureshi v Soonwoo Kwon | 6-3,1-6,7-6 |
| Australian Open | 2018/01/16 04:35 | Soonwoo Kwon v Jan-Lennard Struff | 1-6,2-6,4-6 |