Stadium: Staerk Court Round: 26 Ground: Clay
| ITF M15 Quinta Do Lago | 2019/03/20 15:55 | Jonathan Binding v Jeremy Jahn | 2-6,1-6 |
| ITF M25 Kazan | 2019/03/14 08:35 | Jeremy Jahn v Ben Patael | 6-7,5-7 |
| ITF M25 Kazan | 2019/03/13 08:30 | Jeremy Jahn v Kristian Lozan | 6-1,6-3 |
| ITF M25 Kazan | 2019/03/13 07:00 | Jeremy Jahn v Kristian Lozan | 6-1,6-3 |
| ITF M25 Trento | 2019/03/03 09:30 | Jeremy Jahn v Jannik Sinner | 3-6,4-6 |
| ITF M25 Trento | 2019/03/02 13:00 | Julian Lenz v Jeremy Jahn | 6-7,3-6 |
| ITF M25 Trento | 2019/03/01 12:30 | Artem Dubrivnyy v Jeremy Jahn | 0-6,3-6 |
| ITF M25 Trento | 2019/02/28 11:50 | Christopher Heyman v Jeremy Jahn | 6-3,3-6,4-6 |
| Challenger Zhangjiagang | 2019/03/18 02:00 | Colin Sinclair v Fajing Sun | 4-6,2-6 |
| Challenger Shenzhen | 2019/03/12 04:20 | Enrique Lopez-Perez v Colin Sinclair | 6-2,6-4 |
| Challenger Shenzhen | 2019/03/11 02:00 | Colin Sinclair v Xinmu Zhou | 6-2,6-4 |
| ITF M25 Mildura | 2019/03/06 23:00 | Rio Noguchi v Colin Sinclair | 6-7,6-2,6-3 |
| ITF M25 Mildura | 2019/03/05 23:00 | Alexander Klintcharov v Colin Sinclair | 4-6,2-6 |
| ITF M25 Albury | 2019/02/27 02:15 | Colin Sinclair v Issei Okamura | 6-7,6-2,4-6 |
| ITF M15 Tucson | 2019/02/14 21:30 | Colin Sinclair v Jose Olivares | 3-6,6-7 |
| ITF M15 Tucson | 2019/02/13 18:10 | Colin Sinclair v Luke Jacob Gamble | 7-6,6-0 |