United Kingdom: Wimbledon - Singles - Qualification |
| Semi-finals | Shimabukuro S. | De Jong J. | 2:1 (7:63, 4:6, 7:68) | details | 26.06.2024 |
| Quarter-finals | Kudla D. | De Jong J. | 0:2 (63:7, 2:6) | details | 24.06.2024 |
Italy: Sassuolo - Singles - Main |
| Final | Altmaier D. | De Jong J. | 0:2 (65:7, 1:6) | details | 22.06.2024 |
| Semi-finals | Klizan M. | De Jong J. | 1:2 (6:4, 1:6, 0:6) | details | 21.06.2024 |
| Quarter-finals | Weis A. | De Jong J. | 1:2 (7:5, 3:6, 3:6) | details | 20.06.2024 |
| 1/8-finals | Buse I. | De Jong J. | 0:2 (61:7, 4:6) | details | 19.06.2024 |
| 1/16-finals | De Jong J. | Muller A. | 2:0 (6:2, 6:3) | details | 18.06.2024 |
Italy: Perugia - Singles - Main |
| 1/8-finals | De Jong J. | Djere L. | 0:2 (4:6, 5:7) | details | 12.06.2024 |
| 1/16-finals | Bonadio R. | De Jong J. | 0:2 (5:7, 5:7) | details | 11.06.2024 |
France: French Open - Singles - Main |
| 1/32-finals | De Jong J. | Alcaraz C. | 1:3 (3:6, 4:6, 6:2, 2:6) | details | 29.05.2024 |
| 1/64-finals | Draper J. | De Jong J. | 2:3 (5:7, 4:6, 7:63, 6:3, 3:6) | details | 26.05.2024 |
France: French Open - Singles - Qualification |
| Final | Wolf J.J. | De Jong J. | 0:2 (1:6, 2:6) | details | 24.05.2024 |
| Semi-finals | Novak D. | De Jong J. | 0:2 (3:6, 3:6) | details | 22.05.2024 |
| Quarter-finals | De Jong J. | Llamas Ruiz P. | 2:0 (7:5, 7:66) | details | 21.05.2024 |
Tunisia: Tunis - Singles - Main |
| 1/16-finals | De Jong J. | Royer V. | 1:2 (3:6, 7:5, 4:6) | details | 13.05.2024 |
Italy: Rome - Singles - Qualification |
| Final | Nakashima B. | De Jong J. | 2:1 (6:4, 4:6, 6:4) | details | 07.05.2024 |
| Semi-finals | De Jong J. | Rodionov J. | 2:1 (6:3, 2:6, 6:4) | details | 06.05.2024 |
Italy: Cagliari - Singles - Main |
| 1/16-finals | De Jong J. | Nava E. | 0:2 (1:6, 3:6) | details | 01.05.2024 |
Italy: Cagliari - Singles - Qualification |
| Final | De Jong J. | Passaro F. | 2:1 (6:3, 62:7, 7:61) | details | 30.04.2024 |
| Semi-finals | De Jong J. | Nouza P. | 2:0 (6:2, 6:1) | details | 29.04.2024 |
Italy: Rome - Singles - Main |
| Quarter-finals | Moro Canas A. | De Jong J. | 2:0 (7:61, 6:4) | details | 26.04.2024 |
| 1/8-finals | Serafini M. | De Jong J. | 0:2 (3:6, 3:6) | details | 25.04.2024 |
| 1/16-finals | Fatic N. | De Jong J. | 1:1 RET. (6:3, 66:7, 1:4) | details | 22.04.2024 |
Portugal: Oeiras 3 - Singles - Main |
| 1/8-finals | De Jong J. | Royer V. | 0:2 (2:6, 3:6) | details | 17.04.2024 |
| 1/16-finals | De Jong J. | Onclin G. | 2:0 (6:3, 6:2) | details | 16.04.2024 |
| 1/16-finals | Halys Q. | De Jong J. | CAN. | details | 15.04.2024 |
Spain: Barcelona - Singles - Main |
| Quarter-finals | Giustino L. | De Jong J. | 2:0 (7:5, 6:4) | details | 05.04.2024 |
| 1/8-finals | Sanchez Izquierdo N. | De Jong J. | 0:2 (3:6, 4:6) | details | 03.04.2024 |
| 1/16-finals | Krutykh O. | De Jong J. | 0:2 (1:6, 3:6) | details | 02.04.2024 |
Spain: Girona - Singles - Main |
| Quarter-finals | De Jong J. | Martinez P. | 1:2 (64:7, 6:3, 2:6) | details | 29.03.2024 |
| 1/8-finals | De Jong J. | Pellegrino A. | 0:0 RET. (4:1) | details | 28.03.2024 |
| 1/16-finals | De Jong J. | Choinski J. | 2:0 (6:3, 6:3) | details | 26.03.2024 |
Spain: Murcia - Singles - Main |
| 1/16-finals | De Jong J. | Basilashvili N. | 0:2 (3:6, 2:6) | details | 19.03.2024 |
Spain: Tenerife 3 - Singles - Main |
| 1/16-finals | Roca Batalla O. | De Jong J. | CAN. | details | 26.02.2024 |
Spain: Tenerife 2 - Singles - Main |
| 1/8-finals | Caruso S. | De Jong J. | 2:1 (6:4, 1:6, 6:3) | details | 21.02.2024 |
| 1/16-finals | Holmgren A. | De Jong J. | 1:2 (6:2, 4:6, 3:6) | details | 20.02.2024 |
Netherlands: Rotterdam - Singles - Main |
| 1/16-finals | Raonic M. | De Jong J. | 2:0 (7:65, 6:4) | details | 12.02.2024 |
France: Montpellier - Singles - Qualification |
| Semi-finals | Blanchet U. | De Jong J. | 2:0 (6:3, 6:2) | details | 28.01.2024 |
Australia: Australian Open - Singles - Main |
| 1/32-finals | Sinner J. | De Jong J. | 3:0 (6:2, 6:2, 6:2) | details | 17.01.2024 |
| 1/64-finals | De Jong J. | Cachin P. | 3:1 (4:6, 6:2, 6:3, 6:4) | details | 14.01.2024 |
Australia: Australian Open - Singles - Qualification |
| Final | De Jong J. | Ugo Carabelli C. | 2:1 (7:63, 3:6, 7:67) | details | 12.01.2024 |
| Semi-finals | Meligeni Alves F. | De Jong J. | 0:2 (65:7, 1:6) | details | 11.01.2024 |
| Quarter-finals | Brancaccio R. | De Jong J. | 0:2 (1:6, 2:6) | details | 09.01.2024 |