Stadium: Court 15 Round: 27 Ground: Hardcourt indoor
| 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 M15 Piombino | 2019/08/30 19:00 | Anton Matusevich v Yannick Mertens | 6-3,6-2 |
| ITF M25 Plaisir | 2019/09/17 15:30 | Valentin Royer v Yshai Oliel | 6-2,6-1 |
| ITF M15 Monastir | 2019/03/02 09:00 | Christoph Negritu v Valentin Royer | 6-1,6-1 |
| ITF M15 Monastir | 2019/03/01 11:30 | Carlos Sanchez Jover v Valentin Royer | 4-6,4-6 |
| ITF M15 Monastir | 2019/02/28 11:10 | Valentin Royer v Francesco Vilardo | 6-1,6-2 |
| ITF M15 Monastir | 2019/02/26 09:55 | Valentin Royer v Sabit Suntic | 6-3,6-4 |
| ITF M15 Monastir | 2019/02/20 12:35 | Valentin Royer v Jaume Pla Malfeito | 7-6,3-6,4-6 |
| ITF France F20 | 2018/10/04 16:00 | Valentin Royer v Antoine Cornut-Chauvinc | 3-6,5-7 |
| ITF France F20 | 2018/10/02 13:55 | Elmar Ejupovic v Valentin Royer | 6-4,4-6,6-7 |