Brazil: Porto Alegre - Doubles - Main |
| Quarter-finals | Harper P./Stevenson D. | Mena F./Sakellaridis S. | WO. | details | 03.05.2024 |
| 1/8-finals | Harper P./Stevenson D. | Ambrogi L. E./Carou I. | 2:0 (6:2, 6:2) | details | 02.05.2024 |
Chile: Concepcion - Doubles - Main |
| Final | Watanabe S./Takeru Y. | Harper P./Stevenson D. | 2:0 (6:4, 7:66) | details | 27.04.2024 |
| Semi-finals | Harper P./Stevenson D. | Bueno G./Farjat T. | 1:0 RET. (6:3, 0:0) | details | 26.04.2024 |
| Quarter-finals | Harper P./Stevenson D. | Roncadelli F./Sakellaridis S. | 2:0 (6:3, 6:4) | details | 25.04.2024 |
| 1/8-finals | Harper P./Stevenson D. | Becerra Otarola I. A./Nunez D. A. | 2:0 (6:4, 6:3) | details | 24.04.2024 |
Argentina: San Miguel de Tucuman - Doubles - Main |
| Final | Harper P./Stevenson D. | Britto L./Villanueva G. | 0:2 (3:6, 2:6) | details | 20.04.2024 |
| Semi-finals | Harper P./Stevenson D. | Aboian L./Aboian V. | 2:0 (6:3, 6:2) | details | 19.04.2024 |
| Quarter-finals | Harper P./Stevenson D. | Zeitune G./Zeitune M. | 2:0 (6:2, 6:4) | details | 18.04.2024 |
| 1/8-finals | Dutra Da Silva D./Kestelboim M. | Harper P./Stevenson D. | 0:2 (68:7, 3:6) | details | 16.04.2024 |
USA: M25 Calabasas, CA - Doubles - Main |
| Semi-finals | Harper P./Hudd E. | Reynolds F./Sigouin B. | 0:2 (2:6, 3:6) | details | 23.03.2024 |
| Quarter-finals | Kirchheimer S./Vandecasteele Q. | Harper P./Hudd E. | 0:2 (4:6, 4:6) | details | 21.03.2024 |
| 1/8-finals | Nefve A./Vance J. | Harper P./Hudd E. | 1:2 (7:5, 2:6, 7:10) | details | 20.03.2024 |
USA: M25 Bakersfield, CA - Doubles - Main |
| Final | Harper P./Hudd E. | Holmgren A./Ponwith N. | 0:2 (1:6, 64:7) | details | 17.03.2024 |
| Semi-finals | Broom C./Stevenson D. | Harper P./Hudd E. | 1:2 (1:6, 6:4, 10:12) | details | 16.03.2024 |
| Quarter-finals | Harper P./Hudd E. | Harper M./Klintcharov A. | 2:0 (6:3, 6:4) | details | 15.03.2024 |
| 1/8-finals | Harper P./Hudd E. | Storrie R. J./Summers M. | 2:0 (6:4, 6:4) | details | 12.03.2024 |
USA: M25 Naples, FL - Doubles - Main |
| 1/8-finals | McCormick T./Witten J. | Harper P./Reynolds F. | 2:1 (6:4, 65:7, 10:6) | details | 20.02.2024 |
Australia: Burnie 2 - Doubles - Main |
| 1/8-finals | Court J./Ilagan A. | Harper P./Hulme M. | 2:1 (6:3, 65:7, 10:5) | details | 06.02.2024 |
| 1/8-finals | Jasika O./Noguchi R. | Harper P./Hulme M. | CAN. | details | 06.02.2024 |
Australia: Burnie - Doubles - Main |
| 1/8-finals | Harper P./Harris A. | Ichikawa T./Watanabe S. | 0:2 (65:7, 5:7) | details | 30.01.2024 |
Australia: Canberra - Doubles - Main |
| Quarter-finals | Goransson A./Olivetti A. | Harper P./Winter E. | 2:0 (7:5, 6:2) | details | 03.01.2024 |
| 1/8-finals | Harper P./Winter E. | Maestrelli F./Vavassori A. | 2:1 (67:7, 6:4, 10:2) | details | 01.01.2024 |
USA: M15 East Lansing, MI - Doubles - Main |
| 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: M25 Austin, TX - Doubles - Main |
| Quarter-finals | Vale D./Velcz Z. | Harper P./Wallner M. | 2:0 (7:5, 7:5) | details | 11.11.2023 |
| 1/8-finals | Cronje L./Hilderbrand T. | Harper P./Wallner M. | 1:2 (6:4, 3:6, 7:10) | details | 08.11.2023 |
USA: M15 Las Vegas, NV - Doubles - Main |
| 1/8-finals | Hasson J./Martinez A. | Harper P./Hudd E. | 2:1 (3:6, 6:3, 10:6) | details | 18.10.2023 |
Sweden: M25 Falun - Doubles - Main |
| 1/8-finals | Merida Aguilar D./Pieczkowski O. | Harper P./Hussey G. | 2:0 (6:3, 6:4) | details | 26.09.2023 |
Sweden: M15 Danderyd - Doubles - Main |
| 1/8-finals | Harper P./Hussey G. | Blockx A./Colson T. | 0:2 (4:6, 66:7) | details | 20.09.2023 |
France: M25+H Plaisir - Doubles - Main |
| Final | Vance J./Whiting T. | Harper P./Wallner M. | 0:2 (4:6, 63:7) | details | 15.09.2023 |
| Semi-finals | Karlovskiy E./Rosenkranz M. | Harper P./Wallner M. | 0:2 (3:6, 2:6) | details | 14.09.2023 |
| Quarter-finals | Fomba L./Reco A. | Harper P./Wallner M. | 0:2 (4:6, 3:6) | details | 13.09.2023 |
| 1/8-finals | Ghibaudo A./Massard L. | Harper P./Wallner M. | 0:2 (65:7, 3:6) | details | 12.09.2023 |
France: M25+H Bagneres-de-Bigorre - Doubles - Main |
| Final | Bertrand R./Hurrion M. | Harper P./Wallner M. | 1:2 (6:3, 3:6, 7:10) | details | 08.09.2023 |
| Semi-finals | Cayre P./Garcian A. | Harper P./Wallner M. | 0:2 (3:6, 2:6) | details | 07.09.2023 |
| Quarter-finals | Dussin L./Reco A. | Harper P./Wallner M. | 1:2 (1:6, 7:63, 8:10) | details | 06.09.2023 |
| 1/8-finals | Cunat M./Teboul L. | Harper P./Wallner M. | 0:2 (5:7, 1:6) | details | 05.09.2023 |
USA: M25 Southaven, MS - Doubles - Main |
| Final | Harper P./Mitsui S. | Seggerman R./Trhac P. | 0:2 (4:6, 3:6) | details | 12.08.2023 |
| Semi-finals | Winegar T./Zheng M. | Harper P./Mitsui S. | 0:2 (3:6, 4:6) | details | 11.08.2023 |
| Quarter-finals | Harper P./Mitsui S. | Kumar P./Maxted L. | 2:0 (6:2, 6:3) | details | 11.08.2023 |
| 1/8-finals | Harper P./Mitsui S. | Rettke V./Richey S. | 2:0 (6:1, 6:2) | details | 09.08.2023 |
USA: M25 Decatur, IL - Doubles - Main |
| Final | Brumm J./Clark E. | Harper P./Mitsui S. | 0:2 (62:7, 4:6) | details | 05.08.2023 |
| Semi-finals | Chopra K./Duarte A. | Harper P./Mitsui S. | 0:2 (5:7, 4:6) | details | 04.08.2023 |
| Quarter-finals | Brown T./Miyoshi K. | Harper P./Mitsui S. | 1:2 (3:6, 7:5, 7:10) | details | 04.08.2023 |
| 1/8-finals | Braswell J./Braswell M. | Harper P./Mitsui S. | 1:2 (6:3, 3:6, 8:10) | details | 01.08.2023 |
USA: M25 Edwardsville, IL - Doubles - Main |
| Quarter-finals | Goldhoff G./Kiger M. | Harper P./Mitsui S. | 2:0 (6:4, 6:4) | details | 29.07.2023 |
| 1/8-finals | Ravichander I./Vandecasteele Q. | Harper P./Mitsui S. | 0:2 (5:7, 2:6) | details | 26.07.2023 |
USA: M25 Champaign, IL - Doubles - Main |
| Quarter-finals | Harper P./Mitsui S. | Mochizuki Y./Takeru Y. | 1:2 (7:68, 5:7, 3:10) | details | 20.07.2023 |
| 1/8-finals | Harper P./Mitsui S. | Banerjee S./Basavareddy N. | 2:0 (7:5, 6:3) | details | 18.07.2023 |