 USA: US Open - Singles - Qualification |
|---|
| Final | Guilleme J. | Petkovic M. | 1:2 (7:62, 0:6, 6:10) | dettagli | 30.08.2024 |
| Semi-finals | Kohlmann E. | Guilleme J. | 0:2 (3:6, 2:6) | dettagli | 29.08.2024 |
 United Kingdom: Wimbledon - Singles - Qualification |
|---|
| Semi-finals | Mazdrashki A. | Guilleme J. | 2:1 (64:7, 7:61, 10:7) | dettagli | 04.07.2024 |
 France: French Open - Singles - Qualification |
|---|
| Final | Robertson C. | Guilleme J. | 2:0 (7:5, 6:2) | dettagli | 31.05.2024 |
| Semi-finals | Guilleme J. | Trifi A. | 2:1 (3:6, 6:2, 7:5) | dettagli | 30.05.2024 |
 Australia: Australian Open - Singles - Qualification |
|---|
| Semi-finals | Mazdrashki A. | Guilleme J. | 2:0 (7:63, 6:2) | dettagli | 17.01.2024 |
 World: Davis Cup - Group IV - Singles - Placement matches |
|---|
| 5th place | Maginley J. | Guilleme J. | 0:2 (4:6, 3:6) | dettagli | 06.08.2022 |
| World: Davis Cup - Group IV - Singles - Main |
|---|
| | Sydow P. | Guilleme J. | 0:2 (3:6, 2:6) | dettagli | 05.08.2022 |
| | Turino O. | Guilleme J. | 1:2 (3:6, 6:3, 2:6) | dettagli | 03.08.2022 |
| | Del Olmo T. | Guilleme J. | 1:2 (6:3, 0:6, 3:6) | dettagli | 02.08.2022 |
