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 |
| Challenger Winnipeg Qual | 2018/07/08 23:15 | Jack Mingjie Lin v Jacob Grills | 6-4,6-0 |
| Challenger Winnipeg Qual | 2018/07/08 20:05 | Nicaise Muamba v Jacob Grills | 6-7,0-6 |
| ITF Canada F5 | 2018/07/07 18:50 | Jacob Grills v William Griffith | 6-2,4-6,4-6 |
| ITF Canada F5 | 2018/07/06 17:00 | Marc-Andrea Huesler v Jacob Grills | 6-3,0-6,5-7 |
| ITF Canada F5 | 2018/07/05 20:45 | Justin Boulais v Jacob Grills | 7-5,1-6,3-6 |
| ITF Canada F5 | 2018/07/03 16:00 | Herbert Jody Maginley v Jacob Grills | 6-7,2-6 |
| 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 |