Stadium: Court 2 Round: 25 Ground: Clay
| ITF M15 - Genova | 2021/06/14 07:00 | Giorgio Tabacco v Andrea Guerrieri | 6-3,3-6,6-10 |
| ITF M15 - Warmbad-Villach | 2021/08/18 08:00 | Peter Heller v Andrea Guerrieri | 6-1,6-1 |
| ITF M15 - Gdynia | 2021/08/09 08:00 | Andrea Guerrieri v Juliusz Bienkiewicz | 6-2,2-6,7-10 |
| ITF M15 - Pärnu | 2021/08/05 09:55 | Yan Sabanin v Andrea Guerrieri | 6-2,6-3 |
| ITF M15 - Pärnu | 2021/08/04 16:00 | Andrea Guerrieri v Johannes Seeman | 2-6,7-6,6-4 |
| ITF - M15 Bergamo | 2021/06/21 12:00 | Andrea Guerrieri v Francesco Vilardo | 6-7,6-2,10-12 |
| ITF M15 - Genova | 2021/06/15 08:50 | Juan Bautista Otegui v Andrea Guerrieri | 6-3,6-1 |
| ITF M15 - Genova | 2021/06/14 07:00 | Giorgio Tabacco v Andrea Guerrieri | 6-3,3-6,6-10 |
| ITF M15 - Gaiba | 2021/06/09 08:45 | Andrea Guerrieri v Giovanni Fonio | 7-5,3-6,3-6 |
| ITF M15 - Bad Waltersdorf | 2021/08/31 09:10 | Fletcher Scott v Giorgio Tabacco | 4-6,1-6 |
| ITF M15 - Bad Waltersdorf | 2021/08/30 09:00 | Martin Zeljenka v Giorgio Tabacco | 5-7,0-6 |
| ITF M15 - Bad Waltersdorf | 2021/08/23 09:00 | Matic Spec v Giorgio Tabacco | 6-4,6-3 |
| ITF M15 - Bad Waltersdorf | 2021/08/22 09:00 | Michael Gloeckler v Giorgio Tabacco | 6-7,6-7 |
| ITF M15 - Pescara | 2021/08/20 10:15 | Giorgio Tabacco v Emiliano Maggioli | 0-6,2-6 |
| ITF M15 - Pescara | 2021/08/19 10:45 | Marcello Serafini v Giorgio Tabacco | 4-6,6-7 |
| ITF M15 - Pescara | 2021/08/18 08:30 | Giorgio Tabacco v Oleksandr Ovcharenko | 6-4,3-6,6-1 |
| ITF M15 - Pescara | 2021/08/16 07:30 | Manuel Mazza v Giorgio Tabacco | 6-2,4-6,5-10 |