Italy: Rome - Singles - Main |
| 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 |
New Caledonia: Noumea - Singles - Main |
| Quarter-finals | De Jong J. | Mayot H. | 1:2 (6:3, 5:7, 4:6) | details | 04.01.2024 |
| 1/8-finals | De Jong J. | Droguet T. | 2:0 (6:0, 6:0) | details | 03.01.2024 |
| 1/16-finals | De Jong J. | Delaney Je. | 2:0 (6:1, 7:5) | details | 02.01.2024 |
France: Orleans - Singles - Main |
| 1/16-finals | Lestienne C. | De Jong J. | 2:0 (6:3, 7:65) | details | 27.09.2023 |
France: St. Tropez - Singles - Main |
| 1/16-finals | Mmoh M. | De Jong J. | 2:1 (6:4, 1:6, 6:4) | details | 19.09.2023 |
Turkey: Istanbul - Singles - Main |
| Semi-finals | Klein L. | De Jong J. | 2:1 (7:62, 62:7, 7:65) | details | 09.09.2023 |
| Quarter-finals | Mpetshi Perricard G. | De Jong J. | 0:2 (5:7, 4:6) | details | 08.09.2023 |
| 1/8-finals | Monday J. | De Jong J. | 0:2 (5:7, 1:6) | details | 06.09.2023 |
| 1/16-finals | Ilhan M. | De Jong J. | 1:2 (2:6, 7:63, 2:6) | details | 05.09.2023 |
USA: US Open - Singles - Qualification |
| Semi-finals | Broady L. | De Jong J. | 2:1 (0:6, 7:5, 7:5) | details | 25.08.2023 |
| Quarter-finals | De Jong J. | Boyer T. | 2:0 (6:3, 6:3) | details | 23.08.2023 |
Poland: Grodzisk Mazowiecki - Singles - Main |
| Final | Hassan B. | De Jong J. | 0:2 (3:6, 3:6) | details | 19.08.2023 |
| Semi-finals | De Jong J. | Ymer E. | 2:0 (7:67, 6:1) | details | 18.08.2023 |
| Quarter-finals | De Jong J. | Kasnikowski M. | 2:0 (6:0, 6:2) | details | 17.08.2023 |
| 1/8-finals | De Jong J. | Broom C. | 2:0 (6:4, 6:4) | details | 16.08.2023 |
| 1/16-finals | De Jong J. | Rodriguez Taverna S. | 1:0 RET. (6:3, 4:3) | details | 14.08.2023 |
Austria: Kitzbuhel - Singles - Qualification |
| Semi-finals | Andreozzi G. | De Jong J. | 2:0 (7:64, 6:2) | details | 29.07.2023 |