Stadium: Court 2 Round: 25 Ground: Hardcourt outdoor
| Challenger Ortisei | 2017/10/10 08:30 | Viola, Matteo v Tristan Lamasine | 7-6,5-7,7-5 |
| Istanbul, Turkey | 2019/09/09 08:25 | Holger Rune v Tristan Lamasine | 1-6,3-6 |
| Challenger Cassis | 2019/09/04 14:05 | Tristan Lamasine v Stakhovsky, Sergiy | 6-2,6-7,1-6 |
| Challenger Cassis | 2019/09/02 10:05 | Ignatik, Uladzimir v Tristan Lamasine | 6-7,2-6 |
| Challenger Meerbusch | 2019/08/14 13:05 | Tristan Lamasine v Carlos Taberner | 7-6,4-6,2-6 |
| Sopot, Pologne | 2019/08/03 09:00 | Stefano Travaglia v Tristan Lamasine | 6-1,7-5 |
| Sopot, Pologne | 2019/08/02 09:00 | Tristan Lamasine v Alexey Vatutin | 3-6,7-5,6-2 |
| Sopot, Pologne | 2019/08/01 09:00 | Ymer, Mikael v Tristan Lamasine | 6-2,4-6,1-6 |
| Sopot, Pologne | 2019/07/30 13:55 | Andrea Pellegrino v Tristan Lamasine | 7-5,4-6,4-6 |
| Challenger Mallorca | 2019/09/01 17:30 | Emil Ruusuvuori v Viola, Matteo | 6-0,6-1 |
| Challenger Mallorca | 2019/08/31 15:30 | Viola, Matteo v Daniel Masur | 7-6,4-6,6-2 |
| Challenger Mallorca | 2019/08/30 17:55 | Kavcic, Blaz v Viola, Matteo | 2-6,1-6 |
| Challenger Mallorca | 2019/08/29 17:20 | Viola, Matteo v Andy Murray | 3-6,6-4,7-6 |
| Challenger Mallorca | 2019/08/27 14:30 | Lopez Perez v Viola, Matteo | 6-7,7-6,0-6 |
| Challenger Mallorca | 2019/08/26 15:00 | Gil, Fred v Viola, Matteo | 2-6,2-6 |
| US Open, New York, USA | 2019/08/20 18:15 | Viola, Matteo v Jannik Sinner | 1-6,0-6 |
| Portoroz, Slovénie | 2019/08/15 18:20 | Constant Lestienne v Viola, Matteo | 6-0,6-1 |