United Kingdom: Wimbledon - Singles - Qualification |
| Quarter-finals | Kovalik J. | Shimabukuro S. | 0:2 (5:7, 3:6) | details | 24.06.2024 |
Slovakia: Bratislava - Singles - Main |
| Semi-finals | Kovalik J. | Rocha H. | 0:2 (3:6, 4:6) | details | 15.06.2024 |
| Quarter-finals | Landaluce M. | Kovalik J. | 0:2 (3:6, 4:6) | details | 14.06.2024 |
| 1/8-finals | Klizan M. | Kovalik J. | 1:2 (6:4, 4:6, 2:6) | details | 13.06.2024 |
| 1/16-finals | Gima S. | Kovalik J. | 0:2 (3:6, 5:7) | details | 12.06.2024 |
France: French Open - Singles - Main |
| 1/16-finals | Kovalik J. | Rune H. | 0:3 (5:7, 1:6, 62:7) | details | 01.06.2024 |
| 1/32-finals | Khachanov K. | Kovalik J. | 2:3 (6:4, 6:4, 4:6, 3:6, 4:6) | details | 30.05.2024 |
| 1/64-finals | Kovalik J. | Giron M. | 3:1 (7:63, 6:4, 3:6, 7:65) | details | 27.05.2024 |
France: French Open - Singles - Qualification |
| Final | Burruchaga R. A. | Kovalik J. | 2:1 (4:6, 7:62, 6:4) | details | 24.05.2024 |
| Semi-finals | Bonzi B. | Kovalik J. | 0:2 (3:6, 2:6) | details | 22.05.2024 |
| Quarter-finals | Kovalik J. | Paire B. | 2:0 (6:1, 6:4) | details | 20.05.2024 |
Austria: Mauthausen - Singles - Main |
| Final | Pouille L. | Kovalik J. | 2:0 (6:3, 6:3) | details | 12.05.2024 |
| Semi-finals | Kuzmanov D. | Kovalik J. | 1:2 (7:610, 3:6, 0:6) | details | 11.05.2024 |
| Quarter-finals | Kovalik J. | Melzer G. | 2:0 (7:66, 6:3) | details | 10.05.2024 |
| 1/8-finals | Kovalik J. | Heide G. | 2:0 (6:2, 6:1) | details | 09.05.2024 |
| 1/16-finals | Kovalik J. | Gaubas V. | 2:0 (6:0, 7:60) | details | 07.05.2024 |
Italy: Rome - Singles - Main |
| 1/8-finals | Harris B. | Kovalik J. | 2:0 (6:3, 6:4) | details | 24.04.2024 |
| 1/16-finals | Sanchez Izquierdo N. | Kovalik J. | 1:2 (6:4, 64:7, 2:6) | details | 23.04.2024 |
Portugal: Oeiras 3 - Singles - Main |
| 1/16-finals | Kovalik J. | Napolitano S. | 0:2 (61:7, 2:6) | details | 16.04.2024 |
Croatia: Split - Singles - Main |
| Final | Piros Z. | Kovalik J. | 1:2 (4:6, 7:5, 5:7) | details | 14.04.2024 |
| Semi-finals | Kovalik J. | Bonzi B. | 2:0 (6:4, 6:3) | details | 13.04.2024 |
| Quarter-finals | Travaglia S. | Kovalik J. | 0:2 (4:6, 62:7) | details | 12.04.2024 |
| 1/8-finals | Kovalik J. | Halys Q. | 2:1 (6:2, 3:6, 6:4) | details | 10.04.2024 |
| 1/16-finals | Ionel N. D. | Kovalik J. | 0:2 (4:6, 1:6) | details | 08.04.2024 |
Italy: Naples 3 - Singles - Main |
| 1/16-finals | Kovalik J. | Nardi L. | 0:2 (3:6, 3:6) | details | 27.03.2024 |
Croatia: Zadar - Singles - Main |
| Final | Kovalik J. | Andreev A. | 2:0 (6:4, 6:2) | details | 24.03.2024 |
| Semi-finals | Forejtek J. | Kovalik J. | 0:2 (4:6, 3:6) | details | 23.03.2024 |
| Quarter-finals | Kovalik J. | Serdarusic N. | 2:1 (3:6, 6:3, 7:64) | details | 22.03.2024 |
| 1/8-finals | Piros Z. | Kovalik J. | 1:2 (6:0, 64:7, 3:6) | details | 21.03.2024 |
| 1/16-finals | Kovalik J. | Furness E. | 2:0 (6:0, 6:2) | details | 19.03.2024 |
Hungary: Szekesfehervar - Singles - Main |
| 1/8-finals | Droguet T. | Kovalik J. | 2:0 (6:4, 7:65) | details | 14.03.2024 |
| 1/16-finals | Fajta P. | Kovalik J. | 0:2 (2:6, 3:6) | details | 12.03.2024 |
Spain: Tenerife 3 - Singles - Main |
| 1/8-finals | Bu Y. | Kovalik J. | 2:0 (6:4, 6:4) | details | 28.02.2024 |
| 1/16-finals | Kovalik J. | Radulov I. | 2:0 (7:5, 6:2) | details | 27.02.2024 |
Spain: Tenerife 2 - Singles - Main |
| Quarter-finals | Kovalik J. | Travaglia S. | 1:1 RET. (5:7, 6:3, 0:3) | details | 23.02.2024 |
| 1/8-finals | Kuzmanov D. | Kovalik J. | 1:2 (6:4, 64:7, 5:7) | details | 21.02.2024 |
| 1/16-finals | Kovalik J. | Zusman R. | 2:0 (7:65, 6:4) | details | 19.02.2024 |
Bahrain: Manama - Singles - Main |
| 1/16-finals | Shelbayh A. | Kovalik J. | 2:0 (7:64, 6:3) | details | 13.02.2024 |
Argentina: Buenos Aires 2 - Singles - Main |
| 1/8-finals | Kovalik J. | Popko D. | 0:1 RET. (3:6, 2:5) | details | 18.01.2024 |
| 1/16-finals | Kovalik J. | Torres J. B. | 2:1 (6:2, 3:6, 6:2) | details | 15.01.2024 |
Australia: Australian Open - Singles - Qualification |
| Quarter-finals | Kovalik J. | Bellucci M. | 1:2 (1:6, 6:4, 65:7) | details | 09.01.2024 |
Portugal: Maia - Singles - Main |
| 1/16-finals | Kovalik J. | Ramos A. | 0:2 (4:6, 3:6) | details | 28.11.2023 |
Spain: Valencia - Singles - Main |
| 1/8-finals | Fognini F. | Kovalik J. | 2:1 (6:1, 4:6, 6:3) | details | 23.11.2023 |
| 1/16-finals | Roca Batalla O. | Kovalik J. | 1:2 (7:64, 3:6, 64:7) | details | 21.11.2023 |