Stadium: Court 1 Round: 25 Ground: Hardcourt indoor
| Knoxville, USA, Qualifying | 2015/11/10 15:00 | Bossel, Adrien v Willis, Marcus | 3-6,6-4,7-5 |
| ITF Switzerland F1 | 2018/02/07 13:45 | Bossel, Adrien v Marc-Andrea Huesler | 4-6,7-6,3-6 |
| Rennes, France, Qualifying | 2018/01/20 14:05 | Bossel, Adrien v Gabashvili, Teimuraz | 2-6,6-7 |
| Challenger Koblenz Qual | 2018/01/15 09:00 | Bossel, Adrien v Horansky, Filip | 6-7,6-4,2-6 |
| Challenger Koblenz Qual | 2018/01/14 09:00 | Reuter, Yannik v Bossel, Adrien | 6-2,4-6,1-6 |
| ITF Finland F4 | 2017/11/13 13:15 | Bossel, Adrien v Klimov, Philipp | 4-6,7-6,3-6 |
| ITF Estonia F4 | 2017/11/08 13:00 | Bossel, Adrien v Heliovaara, Harri | 6-7,6-7 |
| ITF Estonia F4 | 2017/11/06 10:35 | Bossel, Adrien v Ahti, Ville-Petteri | 6-2,6-3 |
| ITF Estonia F3 | 2017/10/30 08:00 | Bossel, Adrien v Gregoire Barrere | 6-4,6-7,6-7 |
| ITF Great Britain F2 | 2018/02/07 13:55 | Willis, Marcus v Haim, Matthias | 4-6,4-6 |
| ITF Great Britain F1 | 2018/02/02 10:00 | Willis, Marcus v Viola, Matteo | 6-7,3-6 |
| ITF Great Britain F1 | 2018/02/01 12:00 | Desein, Niels v Willis, Marcus | 3-6,5-7 |
| ITF Great Britain F1 | 2018/01/31 16:35 | Jack Draper v Willis, Marcus | 3-6,6-7 |
| Czech Republic F11, Singles | 2017/11/21 09:00 | Yanais Laurent v Willis, Marcus | 7-5,7-6 |
| Knoxville, USA, Qualifying | 2017/11/06 18:00 | Corrie, Edward v Willis, Marcus | 7-6,7-5 |
| Knoxville, USA, Qualifying | 2017/11/05 21:25 | Willis, Marcus v Touliatos, Preston | 6-1,7-5 |
| ITF Great Britain F5 | 2017/09/20 13:55 | Willis, Marcus v Bauvy, Romain | 6-2,6-7,1-6 |