Stadium: Court 15 Round: 28 Ground: Hardcourt indoor
| Challenger Rennes | 2019/01/21 09:00 | Gregoire Jacq v Yannick Mertens | 7-5,6-2 |
| ITF France F19 | 2016/09/21 09:00 | Gregoire Jacq v Yannick Mertens | 4-6,2-6 |
| ITF France F4 | 2015/03/04 18:55 | Gregoire Jacq v Yannick Mertens | 4-6,7-6,1-6 |
| ITF M25 Plaisir | 2019/09/20 11:30 | Yannick Mertens v Valentin Royer | 7-6,6-3 |
| ITF M25 Plaisir | 2019/09/19 11:30 | Yannick Mertens v Joffrey De Schepper | 6-1,4-6,6-4 |
| ITF M25 Plaisir | 2019/09/18 11:30 | Yannick Mertens v Harry Meehan | 6-3,6-2 |
| Challenger Istanbul | 2019/09/10 09:45 | Yannick Mertens v Evan Hoyt | 5-7,6-4,6-7 |
| ITF M25 Bagneres-De-Bigorre | 2019/09/07 14:25 | Eduardo Struvay v Yannick Mertens | 6-4,6-4 |
| ITF M25 Bagneres-De-Bigorre | 2019/09/06 12:30 | Yannick Mertens v Arthur Reymond | 3-6,6-3,6-4 |
| ITF M25 Bagneres-De-Bigorre | 2019/09/05 17:05 | Yannick Mertens v Ben Patael | 6-4,3-6,6-4 |
| ITF M25 Bagneres-De-Bigorre | 2019/09/03 11:05 | Yannick Mertens v Theo Arribage | 6-2,7-6 |
| ITF M25 Plaisir | 2019/09/20 12:55 | Gregoire Jacq v Lucas Poullain | 6-4,6-3 |
| ITF M25 Plaisir | 2019/09/19 13:35 | Gregoire Jacq v Jonathan Eysseric | 7-6,7-6 |
| ITF M25 Mulhouse | 2019/09/13 10:00 | Gregoire Jacq v Tobias Simon | 4-6,6-7 |
| ITF M25 Mulhouse | 2019/09/12 10:00 | Gregoire Jacq v Mats Rosenkranz | 7-5,6-0 |
| ITF M25 Mulhouse | 2019/09/10 09:00 | Gregoire Jacq v Linus Frost | 6-2,6-1 |
| ITF M25 Toulouse | 2019/06/22 13:30 | Hugo Gaston v Gregoire Jacq | 6-1,6-3 |
| ITF M25 Toulouse | 2019/06/21 13:30 | Laurent Lokoli v Gregoire Jacq | 3-6,4-6 |
| ITF M25 Toulouse | 2019/06/20 13:00 | Pol Toledo Bague v Gregoire Jacq | 4-6,1-6 |