United Kingdom: Wimbledon - Singles - Qualification |
| Final | van Assche L. | Pouille L. | 0:3 (64:7, 5:7, 2:6) | details | 27.06.2024 |
| Semi-finals | van Assche L. | Tu L. | 2:1 (7:5, 3:6, 7:67) | details | 26.06.2024 |
| Quarter-finals | van Assche L. | Marie J. | 2:1 (6:1, 3:6, 7:68) | details | 24.06.2024 |
| Quarter-finals | van Assche L. | Hemery C. | CAN. | details | 24.06.2024 |
Italy: Sassuolo - Singles - Main |
| 1/8-finals | van Assche L. | Boyer T. | 0:2 (2:6, 5:7) | details | 19.06.2024 |
| 1/16-finals | van Assche L. | Burruchaga R. A. | 2:1 (1:6, 6:4, 6:4) | details | 18.06.2024 |
France: Lyon - Singles - Main |
| Quarter-finals | Collignon R. | van Assche L. | 2:0 (7:5, 6:3) | details | 14.06.2024 |
| 1/8-finals | Barranco Cosano J. | van Assche L. | 0:2 (2:6, 5:7) | details | 13.06.2024 |
| 1/16-finals | Gea A. | van Assche L. | 1:2 (6:4, 4:6, 64:7) | details | 11.06.2024 |
Germany: Heilbronn - Singles - Main |
| Semi-finals | van Assche L. | Nagal S. | 0:2 (2:6, 65:7) | details | 08.06.2024 |
| Quarter-finals | Kasnikowski M. | van Assche L. | 1:2 (3:6, 6:3, 0:6) | details | 07.06.2024 |
| 1/8-finals | Blancaneaux G. | van Assche L. | 1:2 (6:3, 3:6, 2:6) | details | 06.06.2024 |
| 1/16-finals | Janvier M. | van Assche L. | 1:2 (7:62, 3:6, 62:7) | details | 04.06.2024 |
France: French Open - Singles - Main |
| 1/64-finals | van Assche L. | Shapovalov D. | 0:3 (3:6, 4:6, 4:6) | details | 27.05.2024 |
Spain: Madrid - Singles - Main |
| 1/32-finals | Baez S. | van Assche L. | 2:1 (6:4, 62:7, 6:3) | details | 26.04.2024 |
| 1/64-finals | van Assche L. | Bergs Z. | 2:1 (6:4, 60:7, 6:1) | details | 24.04.2024 |
Spain: Barcelona - Singles - Main |
| 1/16-finals | Marozsan F. | van Assche L. | 1:0 RET. (6:0, 3:2) | details | 17.04.2024 |
| 1/32-finals | van Assche L. | Zhang Z. | 2:0 (7:5, 6:2) | details | 16.04.2024 |
Monaco: Monte Carlo - Singles - Qualification |
| Semi-finals | Altmaier D. | van Assche L. | 2:1 (2:6, 6:2, 6:3) | details | 06.04.2024 |
Morocco: Marrakech - Singles - Main |
| 1/16-finals | van Assche L. | Munar J. | 0:2 (63:7, 2:6) | details | 01.04.2024 |
USA: Miami - Singles - Main |
| 1/32-finals | Ruud C. | van Assche L. | 2:1 (7:65, 1:6, 6:1) | details | 23.03.2024 |
| 1/64-finals | Kotov P. | van Assche L. | 0:2 (3:6, 5:7) | details | 20.03.2024 |
USA: Phoenix - Singles - Main |
| Semi-finals | Borges N. | van Assche L. | 2:1 (6:4, 4:6, 6:2) | details | 16.03.2024 |
| Quarter-finals | Kudla D. | van Assche L. | 0:2 (3:6, 1:6) | details | 16.03.2024 |
| 1/8-finals | van Assche L. | Lestienne C. | 0:0 RET. (4:1) | details | 14.03.2024 |
| 1/16-finals | Garin C. | van Assche L. | 1:2 (6:2, 4:6, 4:6) | details | 13.03.2024 |
USA: Indian Wells - Singles - Main |
| 1/64-finals | van Assche L. | Arnaldi M. | 0:2 (66:7, 63:7) | details | 06.03.2024 |
United Arab Emirates: Dubai - Singles - Main |
| 1/16-finals | van Assche L. | Khachanov K. | 0:2 (2:6, 3:6) | details | 27.02.2024 |
United Arab Emirates: Dubai - Singles - Qualification |
| Final | van Assche L. | Marterer M. | 1:2 (7:5, 3:6, 4:6) | details | 25.02.2024 |
| Semi-finals | van Assche L. | Dougaz A. | 2:0 (7:63, 6:1) | details | 24.02.2024 |
Qatar: Doha - Singles - Qualification |
| Semi-finals | van Assche L. | Cressy M. | 0:2 (3:6, 2:6) | details | 17.02.2024 |
Netherlands: Rotterdam - Singles - Qualification |
| Semi-finals | van Assche L. | Brouwer G. | 0:2 (3:6, 3:6) | details | 10.02.2024 |
France: Marseille - Singles - Main |
| 1/16-finals | Ruusuvuori E. | van Assche L. | 2:0 (7:62, 6:4) | details | 07.02.2024 |
World: Davis Cup - World Group - Singles - Qualification |
| | Wu Tung-Lin | van Assche L. | CAN. | details | 04.02.2024 |
| | Hsu Y. H. | van Assche L. | 0:2 (4:6, 4:6) | details | 03.02.2024 |
Australia: Australian Open - Singles - Main |
| 1/16-finals | van Assche L. | Tsitsipas S. | 0:3 (3:6, 0:6, 4:6) | details | 19.01.2024 |
| 1/32-finals | Musetti L. | van Assche L. | 2:3 (3:6, 6:3, 7:65, 3:6, 0:6) | details | 17.01.2024 |
| 1/64-finals | Duckworth J. | van Assche L. | 2:3 (7:62, 3:6, 6:3, 3:6, 3:6) | details | 15.01.2024 |
New Zealand: Auckland - Singles - Main |
| 1/8-finals | van Assche L. | Norrie C. | 1:2 (3:6, 7:66, 1:6) | details | 10.01.2024 |
| 1/16-finals | Wolf J.J. | van Assche L. | 0:2 (4:6, 2:6) | details | 08.01.2024 |
New Zealand: Auckland - Singles - Qualification |
| Final | van Assche L. | Munar J. | 2:1 (3:6, 7:65, 6:2) | details | 07.01.2024 |
| Semi-finals | Sitak A. | van Assche L. | 0:2 (1:6, 1:6) | details | 06.01.2024 |
| Semi-finals | Garin C. | van Assche L. | CAN. | details | 06.01.2024 |
Australia: Brisbane - Singles - Main |
| 1/16-finals | van Assche L. | Shevchenko A. | 0:2 (3:6, 2:6) | details | 31.12.2023 |
World: Next Gen Finals - Jeddah - Play Offs |
| Semi-finals | Fils A. | van Assche L. | 3:1 (2:4, 4:1, 4:31, 4:36) | details | 01.12.2023 |
World: Next Gen Finals - Jeddah - Main |
| Group B | van Assche L. | Michelsen A. | 3:2 (4:30, 34:4, 34:4, 4:1, 4:36) | details | 30.11.2023 |
| Group B | van Assche L. | Medjedovic H. | 1:3 (2:4, 4:2, 37:4, 1:4) | details | 29.11.2023 |
| Group B | van Assche L. | Shelbayh A. | 3:1 (4:35, 35:4, 4:1, 4:1) | details | 28.11.2023 |