Serbia: Belgrade 2 - Singles - Main |
| Semi-finals | Lehecka J. | Shapovalov D. | 0:2 (2:6, 1:6) | dettagli | 08.11.2024 |
| Quarter-finals | Klein L. | Lehecka J. | 1:2 (6:3, 63:7, 3:6) | dettagli | 07.11.2024 |
| 1/8-finals | Cilic M. | Lehecka J. | 0:2 (4:6, 64:7) | dettagli | 05.11.2024 |
France: Paris - Singles - Main |
| 1/32-finals | Draper J. | Lehecka J. | 2:0 (7:5, 6:2) | dettagli | 29.10.2024 |
Switzerland: Basel - Singles - Main |
| 1/16-finals | Martinez P. | Lehecka J. | 2:0 (6:2, 6:2) | dettagli | 23.10.2024 |
Belgium: Antwerp - Singles - Main |
| Final | Bautista-Agut R. | Lehecka J. | 2:0 (7:5, 6:1) | dettagli | 20.10.2024 |
| Semi-finals | Giron M. | Lehecka J. | 1:2 (3:6, 6:4, 2:6) | dettagli | 19.10.2024 |
| Quarter-finals | Lehecka J. | Tsitsipas S. | 2:0 (6:4, 6:4) | dettagli | 18.10.2024 |
| 1/8-finals | Lehecka J. | Altmaier D. | 2:0 (6:4, 6:3) | dettagli | 17.10.2024 |
| 1/16-finals | Lehecka J. | Munar J. | 2:0 (6:1, 6:4) | dettagli | 15.10.2024 |
China: Shanghai - Singles - Main |
| 1/16-finals | Lehecka J. | Rune H. | 0:2 (4:6, 5:7) | dettagli | 08.10.2024 |
| 1/32-finals | Lehecka J. | Munar J. | 2:0 (7:66, 6:4) | dettagli | 05.10.2024 |
| 1/64-finals | Kotov P. | Lehecka J. | CAN. | dettagli | 02.10.2024 |
China: Beijing - Singles - Main |
| Quarter-finals | Sinner J. | Lehecka J. | 2:0 (6:2, 7:66) | dettagli | 30.09.2024 |
| 1/8-finals | Lehecka J. | Bautista-Agut R. | 2:1 (3:6, 6:2, 6:1) | dettagli | 28.09.2024 |
| 1/16-finals | Lehecka J. | Martinez P. | 2:0 (7:64, 6:2) | dettagli | 26.09.2024 |
World: Davis Cup - World Group - Singles - Main |
| | Lehecka J. | Fils A. | 1:2 (7:65, 5:7, 4:6) | dettagli | 14.09.2024 |
| | Lehecka J. | Bautista-Agut R. | 0:2 (61:7, 4:6) | dettagli | 11.09.2024 |
USA: US Open - Singles - Main |
| 1/16-finals | Rublev A. | Lehecka J. | 3:0 (6:3, 7:5, 6:4) | dettagli | 30.08.2024 |
| 1/32-finals | Krueger M. | Lehecka J. | 2:3 (7:65, 6:0, 4:6, 4:6, 5:7) | dettagli | 28.08.2024 |
| 1/64-finals | Fucsovics M. | Lehecka J. | 1:2 RET. (6:1, 4:6, 3:6, 0:3) | dettagli | 26.08.2024 |
USA: Cincinnati - Singles - Main |
| 1/8-finals | Tiafoe F. | Lehecka J. | 2:1 (6:4, 610:7, 7:65) | dettagli | 17.08.2024 |
| 1/16-finals | Lehecka J. | Medvedev D. | 2:0 (7:62, 6:4) | dettagli | 15.08.2024 |
| 1/32-finals | Lehecka J. | Navone M. | 2:0 (7:63, 6:3) | dettagli | 13.08.2024 |
Spain: Madrid - Singles - Main |
| Semi-finals | Auger-Aliassime F. | Lehecka J. | 0:0 RET. (3:3) | dettagli | 03.05.2024 |
| Quarter-finals | Medvedev D. | Lehecka J. | 0:1 RET. (4:6) | dettagli | 02.05.2024 |
| 1/8-finals | Nadal R. | Lehecka J. | 0:2 (5:7, 4:6) | dettagli | 30.04.2024 |
| 1/16-finals | Lehecka J. | Monteiro T. | 2:0 (6:4, 7:67) | dettagli | 29.04.2024 |
| 1/32-finals | Lehecka J. | Medjedovic H. | 2:0 (7:5, 6:4) | dettagli | 27.04.2024 |
USA: Miami - Singles - Main |
| 1/32-finals | Lehecka J. | Popyrin A. | 0:2 (4:6, 4:6) | dettagli | 24.03.2024 |
USA: Indian Wells - Singles - Main |
| Quarter-finals | Lehecka J. | Sinner J. | 0:2 (3:6, 3:6) | dettagli | 14.03.2024 |
| 1/8-finals | Lehecka J. | Tsitsipas S. | 2:0 (6:2, 6:4) | dettagli | 12.03.2024 |
| 1/16-finals | Rublev A. | Lehecka J. | 0:2 (4:6, 4:6) | dettagli | 10.03.2024 |
| 1/32-finals | Nakashima B. | Lehecka J. | 1:2 (6:3, 3:6, 4:6) | dettagli | 09.03.2024 |
United Arab Emirates: Dubai - Singles - Main |
| Quarter-finals | Bublik A. | Lehecka J. | 1:0 RET. (6:4, 4:1) | dettagli | 29.02.2024 |
| 1/8-finals | Lehecka J. | Khachanov K. | 2:1 (66:7, 7:65, 6:4) | dettagli | 28.02.2024 |
| 1/16-finals | Lehecka J. | Fucsovics M. | 2:1 (6:4, 3:6, 7:5) | dettagli | 27.02.2024 |
Netherlands: Rotterdam - Singles - Main |
| 1/16-finals | Hurkacz H. | Lehecka J. | 2:1 (6:3, 69:7, 7:69) | dettagli | 13.02.2024 |
France: Marseille - Singles - Main |
| 1/8-finals | Lehecka J. | Rinderknech A. | 0:2 (5:7, 65:7) | dettagli | 08.02.2024 |
| 1/16-finals | Lehecka J. | Goffin D. | 2:1 (3:6, 7:5, 6:2) | dettagli | 06.02.2024 |
World: Davis Cup - World Group - Singles - Qualification |
| | Lehecka J. | Oliel Y. | CAN. | dettagli | 04.02.2024 |
| | Lehecka J. | Cukierman D. | 2:0 (6:1, 7:62) | dettagli | 03.02.2024 |
Australia: Australian Open - Singles - Main |
| 1/32-finals | Michelsen A. | Lehecka J. | 3:1 (4:6, 6:3, 6:4, 6:4) | dettagli | 18.01.2024 |
| 1/64-finals | Zapata Miralles B. | Lehecka J. | 0:3 (3:6, 2:6, 3:6) | dettagli | 16.01.2024 |
Australia: Adelaide - Singles - Main |
| Final | Draper J. | Lehecka J. | 1:2 (6:4, 4:6, 3:6) | dettagli | 13.01.2024 |
| Semi-finals | Korda S. | Lehecka J. | 0:2 (2:6, 1:6) | dettagli | 12.01.2024 |