Italy: M25 Reggio Emilia - Singles - Main |
| Final | Sels J. | Klizan M. | 0:2 (4:6, 4:6) | details | 19.05.2024 |
| Semi-finals | Dalla Valle E. | Sels J. | 0:2 (2:6, 3:6) | details | 18.05.2024 |
| Quarter-finals | Sels J. | Vatutin A. | 1:1 RET. (4:6, 7:63, 3:1) | details | 17.05.2024 |
| 1/8-finals | Sels J. | Ovcharenko O. | 2:1 (2:6, 6:3, 6:3) | details | 16.05.2024 |
| 1/16-finals | Clarke J. | Sels J. | 0:2 (64:7, 2:6) | details | 14.05.2024 |
Austria: Mauthausen - Singles - Qualification |
| Semi-finals | Miedler L. | Sels J. | 2:0 (6:3, 6:3) | details | 05.05.2024 |
Czech Republic: Ostrava - Singles - Main |
| 1/8-finals | Sels J. | Squire H. | 0:2 (64:7, 2:6) | details | 24.04.2024 |
| 1/16-finals | Lamasine T. | Sels J. | 1:2 (3:6, 6:4, 5:7) | details | 23.04.2024 |
Czech Republic: Ostrava - Singles - Qualification |
| Final | Basilashvili N. | Sels J. | 0:2 (3:6, 4:6) | details | 22.04.2024 |
| Semi-finals | Berkieta T. | Sels J. | 0:2 (1:6, 0:6) | details | 21.04.2024 |
Italy: M25 Santa Margherita di Pula 3 - Singles - Main |
| Final | Sels J. | Serafini M. | 2:0 (6:3, 6:2) | details | 13.04.2024 |
| Semi-finals | Guerrieri A. | Sels J. | 0:2 (3:6, 4:6) | details | 12.04.2024 |
| Quarter-finals | Potenza L. | Sels J. | 0:2 (3:6, 3:6) | details | 11.04.2024 |
| 1/8-finals | Speziali F. | Sels J. | 0:2 (2:6, 1:6) | details | 10.04.2024 |
| 1/16-finals | Gadamauri B. | Sels J. | 0:2 (3:6, 2:6) | details | 08.04.2024 |
Italy: M25 Santa Margherita di Pula 2 - Singles - Main |
| 1/16-finals | Sels J. | Pieri S. | 1:2 (6:3, 1:6, 62:7) | details | 02.04.2024 |
Italy: M25 Santa Margherita di Pula - Singles - Main |
| 1/8-finals | Ionel N. D. | Sels J. | 2:0 (6:3, 7:62) | details | 28.03.2024 |
| 1/16-finals | Sels J. | Salomone F. | 2:0 (6:3, 6:1) | details | 26.03.2024 |
Dominican Republic: M25 Santo Domingo - Singles - Main |
| 1/16-finals | Sels J. | Marrero Curbelo I. | 0:2 (63:7, 4:6) | details | 06.03.2024 |
Portugal: M25 Vila Real de Santo Antonio 2 - Singles - Main |
| Final | Faria J. | Sels J. | 2:0 (6:3, 6:0) | details | 25.02.2024 |
| Semi-finals | Durasovic V. | Sels J. | 0:2 (2:6, 2:6) | details | 24.02.2024 |
| Quarter-finals | Sels J. | Demin Y. | 2:0 (7:66, 6:2) | details | 24.02.2024 |
| 1/8-finals | Sels J. | Schiessl J. E. | 2:1 (63:7, 6:2, 6:4) | details | 22.02.2024 |
| 1/16-finals | Dellavedova M. | Sels J. | 0:2 (4:6, 3:6) | details | 20.02.2024 |
Portugal: M25 Vila Real de Santo Antonio - Singles - Main |
| Quarter-finals | Sels J. | Sell K. | 0:2 (4:6, 1:6) | details | 16.02.2024 |
| 1/8-finals | Rocha H. | Sels J. | 0:2 (5:7, 3:6) | details | 16.02.2024 |
| 1/16-finals | Sels J. | Shaw M. | 2:0 (6:3, 6:4) | details | 15.02.2024 |
India: M25 Chennai - Singles - Main |
| Semi-finals | Sels J. | Sasikumar M. | 0:1 RET. (0:6, 0:2) | details | 27.01.2024 |
| Quarter-finals | Sels J. | Weber A. | 2:1 (7:62, 61:7, 6:3) | details | 26.01.2024 |
| 1/8-finals | Bobrov B. | Sels J. | 0:2 (1:6, 3:6) | details | 25.01.2024 |
| 1/16-finals | Leong M. W. K. | Sels J. | 0:2 (60:7, 3:6) | details | 23.01.2024 |
India: M25 Bhopal - Singles - Main |
| 1/16-finals | Vanshelboim E. | Sels J. | 2:1 (69:7, 7:68, 6:4) | details | 17.01.2024 |
India: M25 Mandya - Singles - Main |
| Final | Sels J. | Kimhi O. | 0:2 (2:6, 4:6) | details | 14.01.2024 |
| Semi-finals | Singh K. | Sels J. | 0:2 (1:6, 4:6) | details | 13.01.2024 |
| Quarter-finals | Sels J. | Loof T. | 2:1 (64:7, 6:1, 6:4) | details | 12.01.2024 |
| 1/8-finals | Sasikumar M. | Sels J. | 1:2 (6:2, 63:7, 3:6) | details | 11.01.2024 |
| 1/16-finals | Banthia S. | Sels J. | 0:2 (4:6, 3:6) | details | 11.01.2024 |
Tunisia: M15 Monastir 51 - Singles - Main |
| Semi-finals | Kumar O. | Sels J. | 2:0 (6:4, 7:5) | details | 23.12.2023 |
| Quarter-finals | Bittoun C. | Sels J. | 1:2 (7:64, 2:6, 4:6) | details | 23.12.2023 |
| 1/8-finals | Sels J. | Zhu M. | 2:0 (6:0, 6:1) | details | 22.12.2023 |