Stadium: Court 2 Round: 45 Ground: Hardcourt outdoor
| Challenger Taipei Qual | 2018/04/09 03:00 | Ruan Roelofse v Jacob Grills | 6-4,2-6,7-6 |
| Challenger Puerto Vallarta Qual | 2018/04/28 19:25 | Jose Olivares v Ruan Roelofse | 6-3,7-5 |
| Challenger Taipei | 2018/04/10 06:50 | Ti Chen v Ruan Roelofse | 7-6,6-3 |
| Challenger Taipei Qual | 2018/04/09 03:00 | Ruan Roelofse v Jacob Grills | 6-4,2-6,7-6 |
| Challenger Taipei Qual | 2018/04/07 02:00 | Chen Chang v Ruan Roelofse | 0-6,3-6 |
| ITF USA F8 | 2018/03/23 17:30 | Mathias Bourgue v Ruan Roelofse | 6-3,6-4 |
| ITF USA F8 | 2018/03/20 20:00 | Ruan Roelofse v Isaiah Strode | 6-2,6-4 |
| ITF USA F8 Qual | 2018/03/19 20:20 | Ruan Roelofse v Jake Sands | 1-6,6-4,6-2 |
| ITF USA F8 Qual | 2018/03/17 17:00 | Ruan Roelofse v Alessandro-D Ventre | 6-1,6-2 |
| ITF Singapore F3 | 2018/05/31 06:15 | Maverick Banes v Jacob Grills | 6-1,7-6 |
| ITF Singapore F3 | 2018/05/28 05:00 | Cheng-Yu Yu v Jacob Grills | 7-6,3-6,3-6 |
| ITF Singapore F2 | 2018/05/22 02:00 | Jacob Grills v Kazuki Nishiwaki | 3-6,6-3,5-7 |
| Challenger Busan Qual | 2018/05/12 02:35 | Jacob Grills v Renta Tokuda | 7-6,5-7,3-6 |
| Challenger Gimcheon Qual | 2018/05/06 07:10 | Yoshihito Nishioka v Jacob Grills | 6-2,0-6,7-6 |
| Challenger Gimcheon Qual | 2018/05/05 05:20 | Jacob Grills v Jung-Woong Na | 5-7,6-4,6-3 |
| Challenger Seoul Qual | 2018/04/30 05:00 | Renta Tokuda v Jacob Grills | 6-3,6-2 |
| Challenger Seoul Qual | 2018/04/29 04:15 | Jae Hwan Kim v Jacob Grills | 6-4,2-6,4-6 |