Stadium: Court 3 Round: 45 Ground: Grass
| Challenger Leon Qual | 2018/04/22 19:20 | Marcus Willis v Gonzalo Escobar | 4-6,3-6 |
| Challenger Leon Qual | 2018/04/21 23:00 | Rafael De Alba v Marcus Willis | 4-6,3-6 |
| ITF Great Britain F3 | 2018/02/14 12:55 | Jack Findel-Hawkins v Marcus Willis | 6-7,7-6,6-1 |
| ITF Great Britain F3 | 2018/02/13 13:05 | Adrien Bossel v Marcus Willis | 7-5,5-7,2-6 |
| ITF Great Britain F2 | 2018/02/07 13:55 | Marcus Willis v Matthias Haim | 4-6,4-6 |
| ITF Great Britain F1 | 2018/02/02 10:00 | Marcus Willis v Matteo Viola | 6-7,3-6 |
| ITF Great Britain F1 | 2018/02/01 12:00 | Niels Desein v Marcus Willis | 3-6,5-7 |
| ITF Great Britain F1 | 2018/01/31 16:35 | Jack Draper v Marcus Willis | 3-6,6-7 |
| Challenger Surbiton Qual | 2018/06/04 10:00 | Taylor Fritz v Brydan Klein | 6-3,6-2 |
| Challenger Surbiton Qual | 2018/06/03 10:00 | Brydan Klein v Evan King | 6-4,6-3 |
| Challenger Surbiton Qual | 2018/06/02 12:05 | Vishnu Vardhan v Brydan Klein | 4-6,3-6 |
| Challenger Gimcheon Qual | 2018/05/07 05:00 | Renta Tokuda v Brydan Klein | 1-6,6-3,6-4 |
| Challenger Gimcheon Qual | 2018/05/06 05:50 | Jinseok Yu v Brydan Klein | 3-6,4-6 |
| Challenger Puerto Vallarta | 2018/05/01 19:05 | Brydan Klein v Felipe Mantilla | 4-6,7-6,1-6 |
| Challenger Guadalajara Qual | 2018/04/15 20:05 | Brydan Klein v James Ward | 5-7,4-6 |
| Challenger Guadalajara Qual | 2018/04/14 22:10 | Andrew Harris v Brydan Klein | 2-6,7-5,6-7 |