Stadium: Court 1 Round: 26 Ground: Hardcourt indoor
| ITF Great Britain F3 | 2017/02/15 10:30 | Simon, Tobias v Scott Duncan | 6-2,7-6 |
| ITF M25 Shrewsbury | 2019/09/24 14:10 | Farmer, Elliott v Scott Duncan | 1-6,6-2,3-6 |
| Challenger - Glasgow | 2019/09/17 16:10 | Haerteis, Johannes v Scott Duncan | 6-3,6-3 |
| Challenger - Glasgow | 2019/09/16 09:00 | Drzewiecki, Karol v Scott Duncan | 5-7,6-4,3-6 |
| Chiswick, Singles W-ITF-GBR-09A | 2019/08/05 18:25 | Ewan Moore v Scott Duncan | 6-3,6-3 |
| Chiswick, Singles W-ITF-GBR-09A | 2019/08/05 11:10 | Sean Hodkin v Scott Duncan | 6-7,4-6 |
| Dublin, Singles Qualifying M-ITF-IRL-01A | 2019/08/01 14:25 | Scott Duncan v Carr, Simon | 4-6,6-4,6-7 |
| Dublin, Singles Qualifying M-ITF-IRL-01A | 2019/07/31 12:40 | Rosenzweig, Nicolas v Scott Duncan | 0-6,3-6 |
| Hong Kong, Simples M-ITF-HKG-04A | 2019/06/13 05:55 | Velotti, Agustin v Scott Duncan | 7-5,6-4 |
| ITF M25 Shrewsbury | 2019/09/24 10:35 | Ben Jones v Simon, Tobias | 5-7,1-6 |
| Mulhouse, Singles M-ITF-FRA-16A | 2019/09/14 12:30 | Dan Added v Simon, Tobias | 7-6,6-3 |
| Mulhouse, Singles M-ITF-FRA-16A | 2019/09/13 10:00 | Jacq, Gregoire v Simon, Tobias | 4-6,6-7 |
| Mulhouse, Singles M-ITF-FRA-16A | 2019/09/12 14:05 | Joffrey De Schepper v Simon, Tobias | 7-6,2-6,4-6 |
| Mulhouse, Singles M-ITF-FRA-16A | 2019/09/10 12:55 | Simon, Tobias v Heyman, Christopher | 7-6,6-4 |
| Schlieren, Singles M-ITF-SUI-02A | 2019/08/22 11:25 | Benjamin Bonzi v Simon, Tobias | 6-2,6-3 |
| Schlieren, Singles M-ITF-SUI-02A | 2019/08/21 09:55 | Simon, Tobias v Hartmeier, Patrik | 6-3,6-3 |
| Portoroz, Slovénie | 2019/08/14 14:40 | Zdenek Kolar v Simon, Tobias | 6-2,6-4 |