Italy: Sassuolo - Singles - Main |
| Final | Altmaier D. | De Jong J. | 0:2 (65:7, 1:6) | details | 22.06.2024 |
| Semi-finals | Coria F. | Altmaier D. | 1:2 (7:67, 4:6, 63:7) | details | 21.06.2024 |
| Quarter-finals | Altmaier D. | Bonadio R. | 2:1 (64:7, 6:2, 7:5) | details | 20.06.2024 |
| 1/8-finals | Altmaier D. | Travaglia S. | 2:1 (6:3, 2:6, 6:4) | details | 19.06.2024 |
| 1/16-finals | Altmaier D. | Ymer E. | 2:0 (6:1, 6:0) | details | 18.06.2024 |
Italy: Perugia - Singles - Main |
| Semi-finals | Darderi L. | Altmaier D. | 2:0 (7:64, 6:3) | details | 15.06.2024 |
| Quarter-finals | Altmaier D. | Passaro F. | 2:0 (6:2, 7:5) | details | 14.06.2024 |
| 1/8-finals | Altmaier D. | Travaglia S. | 2:0 (6:3, 7:64) | details | 13.06.2024 |
| 1/16-finals | Altmaier D. | Sanchez Izquierdo N. | 2:0 (6:2, 6:3) | details | 11.06.2024 |
Germany: Heilbronn - Singles - Main |
| 1/8-finals | Altmaier D. | Kasnikowski M. | 0:2 (2:6, 5:7) | details | 06.06.2024 |
| 1/16-finals | Altmaier D. | Topo M. | 2:0 (6:3, 7:64) | details | 04.06.2024 |
France: French Open - Singles - Main |
| 1/32-finals | Altmaier D. | Tsitsipas S. | 1:3 (3:6, 2:6, 7:62, 4:6) | details | 29.05.2024 |
| 1/64-finals | Djere L. | Altmaier D. | 2:3 (5:7, 4:6, 7:66, 7:5, 66:7) | details | 26.05.2024 |
Switzerland: Geneva - Singles - Main |
| 1/16-finals | Altmaier D. | Carballes Baena R. | 0:2 (62:7, 4:6) | details | 19.05.2024 |
Italy: Rome - Singles - Main |
| 1/64-finals | Altmaier D. | Nardi L. | 0:2 (4:6, 4:6) | details | 09.05.2024 |
Italy: Cagliari - Singles - Main |
| 1/16-finals | Mochizuki S. | Altmaier D. | 2:1 (6:4, 1:6, 6:3) | details | 01.05.2024 |
Spain: Madrid - Singles - Main |
| 1/16-finals | Hurkacz H. | Altmaier D. | 2:0 (6:4, 7:62) | details | 28.04.2024 |
| 1/32-finals | Altmaier D. | Fils A. | 2:0 (6:2, 6:3) | details | 26.04.2024 |
| 1/64-finals | Altmaier D. | Landaluce M. | 2:0 (6:1, 7:5) | details | 24.04.2024 |
Spain: Barcelona - Singles - Main |
| 1/16-finals | Altmaier D. | Fils A. | 1:2 (4:6, 6:1, 1:6) | details | 17.04.2024 |
| 1/32-finals | Altmaier D. | Popyrin A. | 2:0 (6:3, 7:64) | details | 16.04.2024 |
Monaco: Monte Carlo - Singles - Main |
| 1/32-finals | Cerundolo F. | Altmaier D. | 2:0 (6:2, 7:63) | details | 08.04.2024 |
Monaco: Monte Carlo - Singles - Qualification |
| Final | Altmaier D. | Moutet C. | 0:2 (2:6, 4:6) | details | 07.04.2024 |
| Semi-finals | Altmaier D. | van Assche L. | 2:1 (2:6, 6:2, 6:3) | details | 06.04.2024 |
Portugal: Estoril - Singles - Main |
| 1/16-finals | Altmaier D. | Martinez P. | 0:2 (4:6, 2:6) | details | 03.04.2024 |
USA: Miami - Singles - Main |
| 1/32-finals | Altmaier D. | Struff J-L. | 0:2 (3:6, 3:6) | details | 24.03.2024 |
| 1/64-finals | Altmaier D. | Mayot H. | 2:0 (6:2, 7:5) | details | 21.03.2024 |
USA: Indian Wells - Singles - Main |
| 1/64-finals | Pouille L. | Altmaier D. | 2:0 (6:4, 6:3) | details | 07.03.2024 |
Mexico: Acapulco - Singles - Main |
| 1/8-finals | Altmaier D. | Kecmanovic M. | 0:2 (4:6, 4:6) | details | 29.02.2024 |
| 1/16-finals | Zverev A. | Altmaier D. | 1:2 (3:6, 6:3, 3:6) | details | 28.02.2024 |
Argentina: Buenos Aires - Singles - Main |
| 1/16-finals | Diaz Acosta F. | Altmaier D. | 2:0 (6:3, 7:61) | details | 12.02.2024 |
Argentina: Cordoba - Singles - Main |
| 1/16-finals | Coria F. | Altmaier D. | 2:1 (5:7, 6:3, 6:4) | details | 06.02.2024 |
Australia: Australian Open - Singles - Main |
| 1/64-finals | Altmaier D. | Khachanov K. | 1:3 (7:5, 3:6, 65:7, 63:7) | details | 15.01.2024 |
New Zealand: Auckland - Singles - Main |
| Quarter-finals | Fils A. | Altmaier D. | 1:0 RET. (7:62, 1:0) | details | 11.01.2024 |
| 1/8-finals | Altmaier D. | Auger-Aliassime F. | 2:0 (7:69, 7:5) | details | 10.01.2024 |
| 1/16-finals | Altmaier D. | Giron M. | 2:0 (7:65, 6:2) | details | 08.01.2024 |
Australia: Brisbane - Singles - Main |
| 1/8-finals | Altmaier D. | Dimitrov G. | 0:2 (1:6, 2:6) | details | 04.01.2024 |
| 1/16-finals | Tu L. | Altmaier D. | 0:2 (65:7, 64:7) | details | 02.01.2024 |
France: Metz - Singles - Main |
| 1/16-finals | Altmaier D. | Valkusz M. | 0:2 (2:6, 2:6) | details | 07.11.2023 |
| 1/16-finals | Altmaier D. | Gaston H. | CAN. | details | 05.11.2023 |
France: Paris - Singles - Main |
| 1/8-finals | Altmaier D. | Rune H. | 0:2 (3:6, 3:6) | details | 02.11.2023 |
| 1/16-finals | Fritz T. | Altmaier D. | WO. | details | 01.11.2023 |
| 1/32-finals | Altmaier D. | Fils A. | 2:0 (6:2, 6:4) | details | 31.10.2023 |
France: Paris - Singles - Qualification |
| Semi-finals | Altmaier D. | Zapata Miralles B. | CAN. | details | 28.10.2023 |
Austria: Vienna - Singles - Main |
| 1/16-finals | Monfils G. | Altmaier D. | 2:0 (6:4, 6:4) | details | 25.10.2023 |
Japan: Tokyo - Singles - Main |
| 1/16-finals | Paul T. | Altmaier D. | 2:1 (3:6, 6:1, 6:3) | details | 16.10.2023 |