Stadium: Court 1 Round: 25 Ground: Hardcourt indoor
| Drummondville, Canada | 2019/03/15 15:00 | Viola, Matteo v de Greef, Arthur | 6-3,7-5 |
| Drummondville, Canada | 2019/03/15 15:00 | Viola, Matteo v de Greef, Arthur | 6-3,7-5 |
| Drummondville, Canada | 2019/03/14 15:40 | Millot, Vincent v de Greef, Arthur | 4-6,7-5,3-6 |
| Drummondville, Canada | 2019/03/13 14:00 | Ulises Blanch v de Greef, Arthur | 6-7,3-6 |
| Challenger - Pau | 2019/02/27 19:50 | de Greef, Arthur v Darcis, Steve | 6-7,5-7 |
| Bergamo, Italy | 2019/02/23 17:30 | de Greef, Arthur v Marcora, Roberto | 6-7,6-4,1-6 |
| Bergamo, Italy | 2019/02/22 15:00 | Vanni, Luca v de Greef, Arthur | 6-7,4-6 |
| Bergamo, Italy | 2019/02/21 15:10 | de Greef, Arthur v Crepatte, Baptiste | 6-2,6-4 |
| Bergamo, Italy | 2019/02/20 12:10 | de Greef, Arthur v Petrovic, Danilo | 6-3,6-4 |
| Challenger - Lille | 2019/03/19 10:35 | Viola, Matteo v Benjamin Bonzi | 4-6,7-5,6-3 |
| Drummondville, Canada | 2019/03/16 18:20 | Ricardas Berankis v Viola, Matteo | 6-4,6-0 |
| Drummondville, Canada | 2019/03/15 15:00 | Viola, Matteo v de Greef, Arthur | 6-3,7-5 |
| Drummondville, Canada | 2019/03/14 14:00 | Quiroz, Roberto v Viola, Matteo | 6-4,3-6,4-6 |
| Drummondville, Canada | 2019/03/13 15:25 | Skander Mansouri v Viola, Matteo | 6-2,4-6,4-6 |
| Challenger - Pau | 2019/02/25 14:30 | Viola, Matteo v Nino Serdarusic | 3-6,4-6 |
| Bergamo, Italy | 2019/02/18 12:20 | Viola, Matteo v Ignatik, Uladzimir | 4-6,4-6 |
| Challenger Budapest | 2019/02/04 18:55 | Pavel Kotov v Viola, Matteo | 1-6,6-4,6-3 |