 Germany: M15 Meerbusch - Doubles - Main |
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| 1/8-finals | Harper M./Loccisano B. | Jong A. M./Muller R. | 0:2 (3:6, 2:6) | details | 23.04.2024 |
 France: M15 Azay-le-Rideau - Doubles - Main |
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| Final | Harper M./Romano F. | Garcian A./Nagel A. | 2:1 (2:6, 6:4, 10:7) | details | 20.04.2024 |
| Semi-finals | Harper M./Romano F. | Dussin L./Jonot S. | WO. | details | 19.04.2024 |
| Quarter-finals | Harper M./Romano F. | Fomba L./Izquierdo Luque R. | 2:0 (7:5, 6:2) | details | 18.04.2024 |
| 1/8-finals | Hudd E./Wendelken H. | Harper M./Romano F. | 1:2 (4:6, 7:65, 11:13) | details | 17.04.2024 |
| France: M15 Lons-le-Saunier - Doubles - Main |
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| Quarter-finals | Dussin L./Vandermeersch C. | Harper M./Romano F. | 2:1 (2:6, 6:4, 10:8) | details | 04.04.2024 |
| 1/8-finals | Papamalamis T./Stenzer M. | Harper M./Romano F. | 0:2 (4:6, 2:6) | details | 02.04.2024 |
 USA: M25 Calabasas, CA - Doubles - Main |
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| Semi-finals | Harper M./Klintcharov A. | Kang K./Rajesh N. | 1:2 (6:1, 2:6, 9:11) | details | 22.03.2024 |
| Quarter-finals | Broom C./Stevenson D. | Harper M./Klintcharov A. | 1:2 (7:65, 2:6, 7:10) | details | 21.03.2024 |
| 1/8-finals | Harper M./Klintcharov A. | Nesterov A./Strode E. | 2:0 (7:5, 7:65) | details | 20.03.2024 |
| USA: M25 Bakersfield, CA - Doubles - Main |
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| Quarter-finals | Harper P./Hudd E. | Harper M./Klintcharov A. | 2:0 (6:3, 6:4) | details | 15.03.2024 |
| 1/8-finals | Harper M./Klintcharov A. | Altamirano C./Mayo K. | 2:0 (6:2, 6:4) | details | 13.03.2024 |
| USA: M25 Naples, FL - Doubles - Main |
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| Quarter-finals | Harper M./Wessels L. | Heck H./Miyoshi K. | 1:2 (4:6, 7:65, 7:10) | details | 22.02.2024 |
| 1/8-finals | Harper M./Wessels L. | Fruttero J./Hilderbrand T. | 2:1 (4:6, 6:2, 10:4) | details | 21.02.2024 |
 Australia: Burnie 2 - Doubles - Main |
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| Quarter-finals | Lock B./Shimizu Y. | Bradshaw J./Harper M. | 2:0 (6:4, 6:2) | details | 08.02.2024 |
| 1/8-finals | Sakellaridis S./Taylor A. | Bradshaw J./Harper M. | 0:2 (64:7, 66:7) | details | 07.02.2024 |
| USA: M15 East Lansing, MI - Doubles - Main |
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| Quarter-finals | Harper M./Harper P. | Ayeni A./Rankin M. | 0:2 (3:6, 64:7) | details | 16.11.2023 |
| 1/8-finals | Harper M./Harper P. | Schifris J./Yunis F. | 2:0 (6:3, 6:4) | details | 14.11.2023 |
| USA: M15 Winston-Salem, NC - Doubles - Main |
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| 1/8-finals | Harper M./Harper M. | Koons H./Thomson M. | 0:2 (4:6, 3:6) | details | 07.11.2023 |
| Australia: M15 Caloundra - Doubles - Main |
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| 1/8-finals | Braithwaite T./Jones S. | Harper M./Harper M. | 2:1 (6:4, 4:6, 10:7) | details | 26.07.2023 |
| USA: M15 Los Angeles, CA - Doubles - Main |
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| 1/8-finals | Asaba A./Harper M. | Kotzen A./Maxted L. | 0:2 (2:6, 4:6) | details | 21.06.2023 |
| USA: M15 San Diego, CA 2 - Doubles - Main |
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| Quarter-finals | Nakashima B. N./Vandecasteele Q. | Asaba A./Harper M. | 2:0 (6:3, 6:4) | details | 16.06.2023 |
| 1/8-finals | Hohmann R./Moreno D. | Asaba A./Harper M. | 0:2 (2:6, 4:6) | details | 14.06.2023 |
| USA: M15 San Diego, CA - Doubles - Main |
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| 1/8-finals | Asaba A./Harper M. | Kaliyanda Poonacha N./Thayne W. | 1:2 (6:4, 3:6, 4:10) | details | 07.06.2023 |
| USA: M15 Rancho Santa Fe, CA - Doubles - Main |
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| Quarter-finals | Brumm J./Soto M. | Asaba A./Harper M. | 2:1 (4:6, 6:3, 10:3) | details | 02.06.2023 |
| 1/8-finals | Strode E./Strode I. | Asaba A./Harper M. | 0:2 (64:7, 3:6) | details | 01.06.2023 |
 Georgia: M15 Tbilisi - Doubles - Main |
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| Semi-finals | Liaonenka A./Zgirovsky A. | Asaba A./Harper M. | 2:0 (6:4, 6:2) | details | 04.05.2023 |
| Quarter-finals | Asaba A./Harper M. | Bertrand R./Donski A. | 2:1 (6:4, 3:6, 10:8) | details | 03.05.2023 |
| 1/8-finals | Bar Biryukov P./Kivattsev K. | Asaba A./Harper M. | 0:2 (3:6, 4:6) | details | 02.05.2023 |
| Georgia: M25 Tbilisi - Doubles - Main |
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| Quarter-finals | Agafonov E./Kachmazov A. | Asaba A./Harper M. | 2:0 (7:62, 6:4) | details | 27.04.2023 |