Croatia: M15 Dubrovnik - Doubles - Main |
| 1/8-finals | Dragomirov D./Gloeckler M. | Chazal M./Karol M. | 2:1 (1:6, 6:2, 10:7) | details | 16.04.2024 |
Slovakia: M25 Trnava - Doubles - Main |
| Quarter-finals | Haliak M./Karol M. | Ruehl T./Zahraj P. | 0:2 (4:6, 3:6) | details | 28.03.2024 |
| 1/8-finals | Haliak M./Karol M. | Purtseladze S./Setkic A. | 2:0 (7:5, 7:66) | details | 27.03.2024 |
Switzerland: M25 Trimbach - Doubles - Main |
| 1/8-finals | Karol M./Ruehl T. | Schell N./Whitehouse M. | 0:2 (4:6, 4:6) | details | 12.03.2024 |
Tunisia: M15 Monastir 9 - Doubles - Main |
| Final | Merino A./Negritu Ch. | Karol M./Simonsson F. | 2:0 (7:63, 6:3) | details | 03.03.2024 |
| Semi-finals | Makhlouf N./Nortey I. | Karol M./Simonsson F. | 0:2 (4:6, 3:6) | details | 02.03.2024 |
| Quarter-finals | Shin M./Vasilev D. | Karol M./Simonsson F. | 0:2 (3:6, 4:6) | details | 02.03.2024 |
| 1/8-finals | Karol M./Simonsson F. | Sakellaridis D./Sakellaridis M. | 2:0 (6:3, 6:1) | details | 27.02.2024 |
Tunisia: M15 Monastir 8 - Doubles - Main |
| Final | Merino A./Negritu Ch. | Karol M./Paul J. | 2:0 (6:3, 6:3) | details | 24.02.2024 |
| Semi-finals | De Jonge D./Sperle J. | Karol M./Paul J. | 0:2 (65:7, 67:7) | details | 23.02.2024 |
| Quarter-finals | Bilardo J./Duhan C. | Karol M./Paul J. | 1:2 (6:1, 1:6, 6:10) | details | 22.02.2024 |
| 1/8-finals | Lane L./Simonsson F. | Karol M./Paul J. | 0:2 (65:7, 3:6) | details | 20.02.2024 |
Spain: M15 Manacor 2 - Doubles - Main |
| 1/8-finals | Gavrielides L./Mikrut L. | Compagnucci T./Karol M. | 2:0 (6:3, 6:2) | details | 17.01.2024 |
Spain: M15 Manacor - Doubles - Main |
| Semi-finals | Compagnucci T./Karol M. | De Krom M./Nijboer R. | 0:2 (3:6, 3:6) | details | 12.01.2024 |
| Quarter-finals | Compagnucci T./Karol M. | Bertimon C./Wallart E. | 2:0 (6:4, 7:63) | details | 12.01.2024 |
| 1/8-finals | Compagnucci T./Karol M. | Piatti R./Weintraub B. | 2:0 (6:4, 6:2) | details | 09.01.2024 |
Tunisia: M15 Monastir 48 - Doubles - Main |
| 1/8-finals | Sperle J./Stuurman R. | Donald M./Karol M. | 2:0 (7:5, 6:4) | details | 28.11.2023 |
Tunisia: M15 Monastir 47 - Doubles - Main |
| Final | Merino A./Negritu Ch. | Karol M./Oetzbach A. | 2:0 (6:3, 6:1) | details | 25.11.2023 |
| Semi-finals | Karol M./Oetzbach A. | Grzegorzewski O./Szajrych J. | 2:1 (2:6, 6:3, 12:10) | details | 25.11.2023 |
| Quarter-finals | Dzhenev A./Giunta M. | Karol M./Oetzbach A. | 0:2 (3:6, 2:6) | details | 24.11.2023 |
| 1/8-finals | Faucon R./Vandermeersch C. | Karol M./Oetzbach A. | 1:2 (4:6, 7:5, 8:10) | details | 24.11.2023 |
Slovakia: M25 Trnava 2 - Doubles - Main |
| Quarter-finals | Karol M./Pokorny L. | Paty D./Poljak D. | 0:2 (3:6, 4:6) | details | 09.11.2023 |