France: French Open - Singles - Main |
| 1/64-finals | Nishikori K. | Diallo G. | 3:2 (7:5, 7:63, 3:6, 1:6, 7:5) | details | 26.05.2024 |
France: French Open - Singles - Qualification |
| Final | Diallo G. | Ritschard A. | 2:1 (2:6, 6:2, 6:3) | details | 23.05.2024 |
| Semi-finals | Trungelliti M. | Diallo G. | 1:2 (66:7, 6:3, 4:6) | details | 22.05.2024 |
| Quarter-finals | Olivieri G. A. | Diallo G. | 1:2 (5:7, 7:64, 1:6) | details | 20.05.2024 |
Austria: Mauthausen - Singles - Main |
| 1/16-finals | Neumayer L. | Diallo G. | 1:1 RET. (4:6, 7:5, 4:2) | details | 07.05.2024 |
Italy: Cagliari - Singles - Main |
| 1/16-finals | Diallo G. | Cerundolo J. M. | 0:2 (0:6, 64:7) | details | 01.05.2024 |
Italy: Cagliari - Singles - Qualification |
| Final | Diallo G. | Dellien H. | 2:0 (7:5, 6:2) | details | 30.04.2024 |
| Semi-finals | Diallo G. | Luz O. | 2:0 (7:64, 7:63) | details | 29.04.2024 |
Czech Republic: Ostrava - Singles - Main |
| 1/16-finals | Squire H. | Diallo G. | 2:1 (6:2, 5:7, 6:4) | details | 22.04.2024 |
USA: Sarasota - Singles - Main |
| Quarter-finals | Diallo G. | Kokkinakis T. | 1:2 (62:7, 6:4, 63:7) | details | 12.04.2024 |
| 1/8-finals | Diallo G. | Boyer T. | 2:1 (64:7, 6:3, 6:4) | details | 12.04.2024 |
| 1/16-finals | Diallo G. | Gomez F. A. | 2:0 (7:64, 7:67) | details | 09.04.2024 |
USA: Houston - Singles - Qualification |
| Semi-finals | Diallo G. | Krueger M. | 0:2 (64:7, 66:7) | details | 30.03.2024 |
USA: Miami - Singles - Qualification |
| Semi-finals | Diallo G. | Nagal S. | 0:2 (63:7, 2:6) | details | 18.03.2024 |
USA: Delray Beach - Singles - Main |
| 1/16-finals | Diallo G. | Borges N. | 0:2 (4:6, 61:7) | details | 13.02.2024 |
USA: Delray Beach - Singles - Qualification |
| Final | Diallo G. | Svajda Z. | 1:2 (4:6, 6:4, 3:6) | details | 11.02.2024 |
| Semi-finals | Diallo G. | Vacherot V. | 2:0 (6:4, 6:4) | details | 10.02.2024 |
World: Davis Cup - World Group - Singles - Qualification |
| | Diallo G. | Hong S. C. | 2:1 (7:5, 4:6, 6:1) | details | 03.02.2024 |
| | Diallo G. | Kwon S. | 2:0 (6:4, 6:4) | details | 02.02.2024 |
France: Quimper - Singles - Main |
| 1/8-finals | Mayot H. | Diallo G. | 2:0 (7:63, 7:61) | details | 25.01.2024 |
| 1/16-finals | Ymer E. | Diallo G. | 0:2 (5:7, 2:6) | details | 23.01.2024 |
Australia: Australian Open - Singles - Qualification |
| Final | Goffin D. | Diallo G. | 2:1 (3:6, 6:3, 6:2) | details | 12.01.2024 |
| Semi-finals | Herbert P. | Diallo G. | 1:2 (6:4, 4:6, 68:7) | details | 11.01.2024 |
| Quarter-finals | Llamas Ruiz P. | Diallo G. | 0:2 (63:7, 1:6) | details | 09.01.2024 |
Australia: Canberra - Singles - Main |
| Semi-finals | Koepfer D. | Diallo G. | 2:1 (65:7, 7:5, 6:3) | details | 05.01.2024 |
| Quarter-finals | Diallo G. | Gigante M. | 2:0 (7:62, 6:2) | details | 04.01.2024 |
| 1/8-finals | Molleker R. | Diallo G. | 0:2 (65:7, 3:6) | details | 03.01.2024 |
| 1/16-finals | Diallo G. | Cerundolo J. M. | 2:1 (4:6, 6:3, 6:0) | details | 01.01.2024 |
World: Davis Cup - World Group - Singles - Play Offs |
| | Diallo G. | Virtanen O. | 0:2 (4:6, 5:7) | details | 21.11.2023 |
Canada: Drummondville - Singles - Main |
| 1/16-finals | Diallo G. | Vrbensky M. | CAN. | details | 14.11.2023 |
Canada: Calgary - Singles - Main |
| Semi-finals | Koepfer D. | Diallo G. | WO. | details | 11.11.2023 |
| Quarter-finals | Diallo G. | Dougaz A. | 2:0 (6:3, 6:2) | details | 11.11.2023 |
| 1/8-finals | Diallo G. | Sousa J. | 2:1 (5:7, 7:5, 6:3) | details | 09.11.2023 |
| 1/16-finals | Diallo G. | Paulson A. | 2:1 (4:6, 7:68, 6:4) | details | 08.11.2023 |
France: Brest - Singles - Main |
| 1/16-finals | Albot R. | Diallo G. | 2:1 (64:7, 6:2, 6:3) | details | 24.10.2023 |
France: Brest - Singles - Qualification |
| Final | Diallo G. | Blancaneaux G. | 2:1 (6:4, 4:6, 7:63) | details | 23.10.2023 |
| Semi-finals | Diallo G. | Villard N. | 2:0 (7:65, 6:1) | details | 22.10.2023 |
Slovakia: Bratislava 2 - Singles - Main |
| Final | Diallo G. | De Loore J. | 2:0 (6:0, 7:5) | details | 15.10.2023 |
| Semi-finals | Diallo G. | Damm M. | 2:0 (7:65, 6:2) | details | 14.10.2023 |
| Quarter-finals | Diallo G. | Klein L. | 2:1 (3:6, 7:65, 6:2) | details | 13.10.2023 |
| 1/8-finals | Thiem D. | Diallo G. | 1:2 (1:6, 6:4, 65:7) | details | 12.10.2023 |