Stadium: Court 1 - Central Round: 25 Ground: Hardcourt outdoor
| Piombino, Singles M-ITF-ITA-19A | 2019/08/30 19:00 | Anton Matusevich v Mertens, Yannick | 6-3,6-2 |
| Piombino, Singles M-ITF-ITA-19A | 2019/08/29 19:05 | Andres Gabriel Ciurletti v Mertens, Yannick | 2-6,3-6 |
| Piombino, Singles M-ITF-ITA-19A | 2019/08/28 11:30 | Carlo Alberto Fossati v Mertens, Yannick | 3-6,2-6 |
| ITF M15 Sintra | 2019/08/24 09:30 | Mertens, Yannick v Antoine Escoffier | 3-6,4-6 |
| ITF M15 Sintra | 2019/08/23 11:10 | Cacao, Tiago v Mertens, Yannick | 3-6,7-6,6-7 |
| ITF M15 Sintra | 2019/08/22 09:00 | Stuart Parker v Mertens, Yannick | 6-4,3-6,2-6 |
| ITF M15 Sintra | 2019/08/21 14:20 | Gueydan, Quentin v Mertens, Yannick | 1-6,1-6 |
| Challenger Granby | 2019/07/24 15:35 | Harris, Andrew v Mertens, Yannick | 6-1,6-1 |
| ITF M15 Sintra | 2019/08/13 10:00 | Gueydan, Quentin v Theo Arribage | 7-5,7-5 |
| ITF M15 Sintra | 2019/08/12 09:00 | Almeida, Eduardo Lobo Da Rosa de v Theo Arribage | 4-6,3-6 |
| ITF M25 Bourg-en-Bresse | 2019/07/01 14:00 | Emilien Voisin v Theo Arribage | 6-2,3-6,10-7 |
| ITF M25 Bourg-en-Bresse | 2019/07/01 07:00 | Traviesa Mola, Oscar v Theo Arribage | 1-6,4-6 |
| ITF M25 Montauban | 2019/06/24 11:15 | Theo Arribage v Florent Bax | 6-7,4-6 |
| ITF - M25 Toulouse | 2019/06/17 10:45 | Benjamin Pietri v Theo Arribage | 6-2,6-2 |
| ITF M15 Majadahonda | 2019/05/28 08:00 | Theo Arribage v Barranco, Sergio | 6-1,4-6,8-10 |
| ITF M15 Majadahonda | 2019/05/27 08:00 | Andres Urrea v Theo Arribage | 2-6,2-6 |