Stadium: Court 2 Round: 54 Ground: Clay
| Reggio Emilia, Singles Qualifying M-ITF-ITA-11A | 2019/05/27 12:30 | Frinzi, Mattia v Di Nocera, Riccardo | 6-2,6-0 |
| Casale Monferrato, Singles M-ITF-ITA-09A | 2019/05/17 08:00 | Avidzba, Alen v Frinzi, Mattia | 6-1,6-1 |
| Casale Monferrato, Singles M-ITF-ITA-09A | 2019/05/16 15:55 | Frinzi, Mattia v Giorgio Ricca | 7-6,6-1 |
| Casale Monferrato, Singles M-ITF-ITA-09A | 2019/05/15 10:00 | Turco, Andrea v Frinzi, Mattia | 4-6,6-7 |
| ITF - M25 Santa Margherita | 2019/05/02 11:10 | Frinzi, Mattia v Ornago, Fabrizio | 7-6,5-7,1-6 |
| ITF - M25 Santa Margherita | 2019/05/01 16:50 | Frinzi, Mattia v Benjamin Pietri | 4-6,6-3,6-2 |
| ITF - M25 Santa Margherita | 2019/04/30 11:00 | Frinzi, Mattia v Kaelin, Yanik | 6-1,6-0 |
| ITF - M25 Santa Margherita | 2019/04/24 18:45 | Bega, Alessandro v Frinzi, Mattia | 6-3,6-4 |
| ITF - M15 Sharm El Sheikh | 2019/04/10 11:35 | Yannik Steinegger v Crepaldi, Erik | 4-6,2-6 |
| ITF - M15 Sharm El Sheikh | 2019/04/09 08:00 | Yannik Steinegger v Bachmaier, Philip | 6-1,6-4 |
| ITF - M15 Sharm El Sheikh | 2019/04/02 08:00 | Staeheli, Luca v Yannik Steinegger | 7-5,6-4 |
| ITF - M15 Sharm El Sheikh | 2019/04/01 08:00 | Zharkov, Artem v Yannik Steinegger | 0-6,1-6 |
| ITF - M15 Sharm El Sheikh | 2019/03/26 08:00 | Shumeiko, Pavel v Yannik Steinegger | 6-4,3-6,6-1 |
| ITF - M15 Sharm El Sheikh | 2019/03/18 08:00 | Brugnerotto, Marco v Yannik Steinegger | 6-2,7-6 |
| Oslo, Singles M-ITF-NOR-01A | 2019/03/07 12:20 | Emil Ruusuvuori v Yannik Steinegger | 7-6,6-4 |
| Oslo, Singles M-ITF-NOR-01A | 2019/03/06 12:05 | Yannik Steinegger v Goldsteiner, Peter | 6-1,6-2 |