Round: 26 Ground: Clay
| ITF USA F15 | 2017/04/26 21:10 | Kirkov, Vasil v Johns, Collin | 1-6,1-6 |
| ITF USA F15 | 2017/04/25 14:00 | Johns, Collin v Rotsaert, Alexandre | 4-6,1-6 |
| ITF USA F15 | 2017/04/23 15:00 | Johns, Collin v Lewis, Haydn | 6-2,6-1 |
| ITF USA F15 | 2017/04/21 13:00 | Johns, Collin v Stillman, Tomas | 6-1,6-3 |
| Sarasota, USA, Qualifying | 2017/04/15 18:35 | Johns, Collin v Blaz Rola | 0-6,6-3,2-6 |
| ITF Japan F5 | 2017/04/04 02:50 | Yusuke Takahashi v Johns, Collin | 6-3,6-1 |
| ITF Japan F4 | 2017/03/28 03:00 | Johns, Collin v Itsusaki, Kaito | 2-6,6-2,4-6 |
| ITF Japan F3 | 2017/03/22 03:35 | Johns, Collin v Watanuki, Yusuke | 3-6,1-6 |
| ITF USA F15 | 2017/04/26 23:00 | Yatsuk, Ivan v Willis, Marcus | 3-6,1-6 |
| ITF Great Britain F3 | 2017/02/18 14:00 | Oscar Otte v Willis, Marcus | 7-5,7-6 |
| ITF Great Britain F3 | 2017/02/17 11:30 | Horansky, Filip v Willis, Marcus | 3-6,4-6 |
| ITF Great Britain F3 | 2017/02/16 13:05 | Willis, Marcus v Vandenbulcke, Yannick | 7-5,6-3 |
| ITF Great Britain F3 | 2017/02/15 10:30 | Willis, Marcus v Lamble, John | 6-3,6-1 |
| ITF Great Britain F3 | 2017/02/14 10:30 | Willis, Marcus v Joncour, Ronan | 6-2,6-4 |
| ITF Great Britain F2 | 2017/02/10 12:35 | Willis, Marcus v Guez, David | 3-6,4-6 |
| ITF Great Britain F2 | 2017/02/09 10:30 | Willis, Marcus v Crepaldi, Erik | 6-4,6-2 |