Stadium: Stadium Court Round: 25 Ground: Hardcourt outdoor
| ITF USA F19 | 2018/07/07 15:30 | Aleksandar Vukic v Harris, Andrew | 6-2,6-4 |
| ITF USA F19 | 2018/07/06 15:00 | Brandon Holt v Harris, Andrew | 0-6,0-6 |
| ITF USA F19 | 2018/07/05 15:40 | Arconada, Jordi v Harris, Andrew | 4-6,2-6 |
| ITF USA F19 | 2018/07/04 16:20 | Smith, Roy v Harris, Andrew | 5-7,1-6 |
| Challenger Guadalajara Qual | 2018/04/14 22:10 | Harris, Andrew v Klein, Brydan | 2-6,7-5,6-7 |
| ITF Australia F4 | 2018/03/30 03:00 | Harris, Andrew v Frawley, James | 7-5,6-4 |
| ITF Australia F4 | 2018/03/29 00:00 | Harris, Andrew v Look, Michael | 6-4,6-4 |
| ITF Australia F4 | 2018/03/28 02:50 | Harris, Andrew v Cavrak, Ken | 6-2,6-2 |
| Wimbledon Qual | 2018/06/26 17:00 | Granollers, Marcel v Smith, John-Patrick | 3-6,4-6 |
| Wimbledon Qual | 2018/06/25 13:35 | Granollers, Marcel v Oscar Otte | 6-4,6-3 |
| Challenger - Nottingham | 2018/06/16 11:00 | Daniel Evans v Granollers, Marcel | 4-6,6-2,6-3 |
| Challenger - Nottingham | 2018/06/15 10:00 | Granollers, Marcel v Ramkumar Ramanathan | 7-6,4-6,7-6 |
| Challenger - Nottingham | 2018/06/13 16:55 | Granollers, Marcel v Ward, Alexander | 6-4,6-3 |
| Challenger - Nottingham | 2018/06/11 17:20 | Fabbiano, Thomas v Granollers, Marcel | 5-7,6-7 |
| Poznan, Poland | 2018/06/07 10:10 | Facundo Bagnis v Granollers, Marcel | 6-1,7-6 |
| Poznan, Poland | 2018/06/05 12:20 | Quiroz, Roberto v Granollers, Marcel | 2-6,7-5,3-6 |