Stadium: Centre Court Round: 24 Ground: Clay
| ITF Poland F7 | 2018/08/19 09:00 | Jahn, Jeremy v Pedro Sakamoto | 6-3,6-4 |
| Challenger Prague | 2019/07/23 13:15 | Pedro Sakamoto v Constant Lestienne | 4-6,5-7 |
| Challenger Prague | 2019/07/22 13:00 | Jomby, Tom v Pedro Sakamoto | 1-6,2-6 |
| Challenger San Benedetto | 2019/07/17 12:50 | Pedro Sakamoto v Federico Gaio | 6-7,6-4,1-6 |
| Challenger San Benedetto | 2019/07/15 16:15 | Roberto Cid Subervi v Pedro Sakamoto | 6-2,2-6,2-6 |
| ITF M25 Casinalbo | 2019/07/12 19:00 | Gijs Brouwer v Pedro Sakamoto | 6-3,3-6,6-1 |
| ITF M25 Casinalbo | 2019/07/11 11:25 | Antonio Massara v Pedro Sakamoto | 7-6,2-6,4-6 |
| ITF M25 Casinalbo | 2019/07/10 08:30 | Wilson Leite v Pedro Sakamoto | 4-6,6-4,4-6 |
| Challenger Blois | 2019/06/18 08:00 | Pedro Sakamoto v Geoffrey Blancaneaux | 3-6,6-3,4-6 |
| Lasne, Singles Qualifying M-ITF-BEL-02A | 2019/07/07 12:30 | Vanneste, Jeroen v Jahn, Jeremy | 6-1,7-5 |
| Lasne, Singles Qualifying M-ITF-BEL-02A | 2019/07/06 12:00 | Jahn, Jeremy v Eriksson, Markus | 7-5,7-6 |
| Lasne, Singles Qualifying M-ITF-BEL-02A | 2019/07/05 13:00 | Zizou Bergs v Jahn, Jeremy | 6-4,2-6,6-7 |
| Lasne, Singles Qualifying M-ITF-BEL-02A | 2019/07/04 09:40 | Antonescu, Vasile v Jahn, Jeremy | 2-6,3-6 |
| Lasne, Singles Qualifying M-ITF-BEL-02A | 2019/07/03 17:30 | Simon Beaupain v Jahn, Jeremy | 1-6,1-6 |
| ITF M25 Arlon | 2019/06/26 08:00 | Ehrat, Sandro v Jahn, Jeremy | 6-4,6-1 |
| Challenger Bratislava | 2019/06/19 14:50 | Jahn, Jeremy v Martin, Andrej | 7-6,2-6,2-6 |
| Challenger Bratislava | 2019/06/17 15:20 | Jahn, Jeremy v Simon, Tobias | 6-4,6-7,6-1 |