Slovakia: M25 Trnava 2 - Doubles - Main |
| 1/8-finals | Hartenstein J. P./Postolka R. | Ingildsen J./Matusevich A. | 0:2 (1:6, 3:6) | details | 07.11.2023 |
Poland: M15 Koszalin - Doubles - Main |
| Semi-finals | Rajski M./Wojcik Y. | Hartenstein J. P./Pavlenko P. | 2:1 (1:6, 7:5, 10:6) | details | 08.09.2023 |
| Quarter-finals | Hartenstein J. P./Pavlenko P. | Sakellaridis D./Sakellaridis M. | 2:0 (6:3, 6:3) | details | 07.09.2023 |
| 1/8-finals | Kielan S./Kosinski F. | Hartenstein J. P./Pavlenko P. | 0:2 (3:6, 3:6) | details | 05.09.2023 |
Poland: M15 Szczawno - Doubles - Main |
| Quarter-finals | Hartenstein J. P./Pavlenko P. | Michalik R./Nad P. | 1:2 (2:6, 6:4, 6:10) | details | 31.08.2023 |
| 1/8-finals | Nicod J./Zahraj P. | Hartenstein J. P./Pavlenko P. | 1:2 (5:7, 6:4, 6:10) | details | 30.08.2023 |
Germany: M25 Marburg - Doubles - Main |
| Quarter-finals | Hartenstein J. P./Pavlenko P. | Recek D./Siniakov D. | 1:2 (6:2, 5:7, 3:10) | details | 06.07.2023 |
| 1/8-finals | Gentzsch T./Mousley B. | Hartenstein J. P./Pavlenko P. | 0:2 (0:6, 63:7) | details | 05.07.2023 |
Denmark: M25 Risskov/Aarhus - Doubles - Main |
| 1/8-finals | Hartenstein J. P./Pavlenko P. | Holmgren A./Sigsgaard C. | 0:2 (3:6, 63:7) | details | 13.06.2023 |
USA: M15 Orange Park, FL - Doubles - Main |
| Semi-finals | Crespo Piedra R./Hartenstein J. P. | Ribeiro Lago E./Rodriguez R. | 0:2 (4:6, 4:6) | details | 06.05.2023 |
| Quarter-finals | Andrade A./Vale D. | Crespo Piedra R./Hartenstein J. P. | 1:2 (66:7, 6:3, 8:10) | details | 04.05.2023 |
| 1/8-finals | Crespo Piedra R./Hartenstein J. P. | Boitan G. A./Markes C. | 2:1 (4:6, 6:2, 10:5) | details | 02.05.2023 |
USA: M15 Boca Raton, FL - Doubles - Main |
| Semi-finals | Hartenstein J. P./Phillips R. | Baker B./Murgett F. | 0:2 (1:6, 3:6) | details | 18.11.2022 |
| Quarter-finals | Kotan P./Nesterov A. | Hartenstein J. P./Phillips R. | 0:2 (1:6, 1:6) | details | 17.11.2022 |
| 1/8-finals | Hartenstein J. P./Phillips R. | Chin J./Renard L. | 2:1 (65:7, 6:2, 10:6) | details | 16.11.2022 |
Netherlands: M15 Haren - Doubles - Main |
| 1/8-finals | Khoeblal E./Van Baal A. J. W. | Hartenstein J. P./Pavlenko P. | 2:0 (6:2, 7:66) | details | 30.08.2022 |