Round: 54 Ground: Clay
| Turkey F14, Singles Qualifying | 2018/04/07 09:30 | Orlando Luz v Walder, Jim | 6-1,6-1 |
| ITF Turkey F13 | 2018/03/31 08:30 | Walder, Jim v Gerini, Tomas | 2-6,1-6 |
| ITF Germany F3 Qual | 2018/01/28 18:00 | Christoph Negritu v Walder, Jim | 6-3,7-6 |
| Turkey F15, Singles Qualifying | 2017/04/15 07:00 | Walder, Jim v Pena Lopez, Manuel | 1-6,3-6 |
| ITF Germany F5 | 2018/06/24 15:00 | Karlo Cubelic v Walder, Jordi | 7-5,3-6,6-2 |
| ITF Germany F4 | 2018/06/17 12:00 | Krohn, Linus v Walder, Jordi | 6-3,6-4 |
| ITF Germany F4 | 2018/06/16 08:00 | Kapric, Denis v Walder, Jordi | 7-6,5-7,4-6 |
| ITF Germany F1 | 2018/01/07 15:00 | Novotny, David v Walder, Jordi | 6-2,6-2 |
| ITF Germany F15 | 2017/10/16 10:00 | Jonas Trinker v Walder, Jordi | 6-3,2-6,6-3 |
| ITF Germany F15 | 2017/10/15 12:00 | Novotny, David v Walder, Jordi | 4-6,6-4,2-6 |
| ITF Turkey F37 | 2017/10/02 07:30 | Plaza, Marcelo v Walder, Jordi | 6-3,6-0 |
| ITF Turkey F37 | 2017/10/01 08:00 | Zaidman, Nicolas v Walder, Jordi | 6-2,2-6,4-6 |