Stadium: Court 4 Round: 25 Ground: Hardcourt indoor
| 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 Gaiba | 2021/06/07 11:40 | Andrea Guerrieri v Gabriele Moghini | 7-6,6-4 |
| ITF M15 Monastir | 2021/05/02 09:00 | Andrea Guerrieri v Alessandro Pecci | 6-3,6-7,6-10 |
| ITF M15 Monastir | 2021/04/25 09:00 | Andrea Guerrieri v Lorenzo Bresciani | 4-6,6-4,7-10 |
| ITF M15 Monastir | 2021/04/19 13:00 | Andrea Guerrieri v Harry Wendelken | 6-3,1-6,4-10 |
| ITF M15 Parnu | 2020/11/03 08:00 | Lucas Renard v Johannes Seeman | 6-7,6-2,7-5 |
| ITF M15 Parnu | 2019/07/15 07:00 | Barnaby Smith v Johannes Seeman | 6-4,3-6,10-1 |
| ITF Finland F4 | 2018/11/11 10:30 | Karl Kiur Saar v Johannes Seeman | 6-4,6-2 |
| ITF Finland F4 | 2018/11/10 11:25 | Johannes Seeman v Sizya Ernest Kivanda | 3-6,6-3,6-3 |
| ITF Estonia F3 | 2018/11/04 09:00 | Johannes Seeman v Igor Shrolik | 3-6,2-6 |
| ITF Estonia F3 | 2018/11/03 11:00 | Daniil Klimov v Johannes Seeman | 4-6,2-6 |
| ITF Estonia F2 | 2018/10/30 09:25 | Igor Shrolik v Johannes Seeman | 6-4,7-6 |
| ITF Estonia F1 | 2018/07/14 08:00 | Johannes Seeman v Tadas Tarasevicius | 5-7,3-6 |