Croatia: Zadar - Doubles - Main |
| Quarter-finals | Duncan S./Willis M. | Guinard M./Jacq G. | 0:2 (63:7, 65:7) | details | 21.03.2024 |
| 1/8-finals | Duncan S./Willis M. | Michalski D./Vanshelboim E. | 2:1 (6:3, 3:6, 11:9) | details | 20.03.2024 |
Spain: Tenerife 2 - Doubles - Main |
| 1/8-finals | Duncan S./Willis M. | De Jong J./Sabanov I. | 0:2 (4:6, 68:7) | details | 20.02.2024 |
United Kingdom: Glasgow - Doubles - Main |
| Final | Duncan S./Willis M. | Edmund K./Searle H. | 2:0 (6:3, 6:2) | details | 17.02.2024 |
| Semi-finals | Duncan S./Willis M. | Fancutt T. J./Reese H. | 2:1 (7:67, 65:7, 10:7) | details | 16.02.2024 |
| Quarter-finals | Duncan S./Willis M. | Ejupovic E./Guerrieri A. | 2:0 (6:0, 6:1) | details | 15.02.2024 |
| 1/8-finals | Duncan S./Willis M. | Poljak D./Wendelken H. | 2:0 (6:4, 6:2) | details | 13.02.2024 |
United Kingdom: Nottingham 3 - Doubles - Main |
| 1/8-finals | Nouza P./Rikl P. | Duncan S./Willis M. | 2:0 (6:3, 6:1) | details | 07.02.2024 |
Spain: Maspalomas - Doubles - Main |
| Final | Arribage T./Doumbia S. | Duncan S./Willis M. | 0:2 (65:7, 4:6) | details | 02.12.2023 |
| Semi-finals | Duncan S./Willis M. | Nedunchezhiyan J./Prashanth V. | 2:1 (6:2, 62:7, 11:9) | details | 02.12.2023 |
| Quarter-finals | Kalovelonis M./Stevenson K. | Duncan S./Willis M. | 0:2 (3:6, 4:6) | details | 30.11.2023 |
| 1/8-finals | Jorda Sanchis D./Sanchez Izquierdo N. | Duncan S./Willis M. | 1:2 (6:2, 2:6, 7:10) | details | 29.11.2023 |
United Kingdom: M25 Glasgow - Doubles - Main |
| Semi-finals | Duncan S./Willis M. | Houghton G./Stewart H. | 1:2 (7:5, 3:6, 8:10) | details | 27.10.2023 |
| Quarter-finals | Duncan S./Willis M. | MacKinlay J./Wendelken H. | 2:0 (7:62, 6:1) | details | 26.10.2023 |
| 1/8-finals | Duncan S./Willis M. | Goodger J./Stevenson D. | 2:0 (6:4, 7:68) | details | 24.10.2023 |
United Kingdom: M25 Edgbaston - Doubles - Main |
| 1/8-finals | Duncan S./Willis M. | Broom C./Stevenson D. | 0:2 (5:7, 5:7) | details | 17.10.2023 |
Portugal: Lisbon - Doubles - Main |
| Quarter-finals | Duncan S./Willis M. | Roca Batalla O./Stodder T. | 0:2 (3:6, 4:6) | details | 05.10.2023 |
| 1/8-finals | Arribage T./Sanchez L. | Duncan S./Willis M. | 0:2 (63:7, 4:6) | details | 04.10.2023 |
Portugal: Braga - Doubles - Main |
| Quarter-finals | Duncan S./Willis M. | Bortolotti M./Jecan M. A. | 1:2 (4:6, 6:3, 7:10) | details | 28.09.2023 |
| 1/8-finals | Kaliyanda Poonacha N./Sharan D. | Duncan S./Willis M. | 1:2 (4:6, 6:4, 6:10) | details | 26.09.2023 |
France: Rennes - Doubles - Main |
| 1/8-finals | Duncan S./Willis M. | Bellucci M./Nardi L. | 1:2 (6:0, 2:6, 8:10) | details | 12.09.2023 |
France: Cassis - Doubles - Main |
| Semi-finals | Added D./Eysseric J. | Duncan S./Willis M. | 2:0 (6:3, 7:63) | details | 08.09.2023 |
| Quarter-finals | Duncan S./Willis M. | McHugh A./Reese H. | 2:0 (6:1, 6:0) | details | 07.09.2023 |
| 1/8-finals | Duncan S./Willis M. | Reynolds F./Sitak A. | 2:0 (6:1, 7:62) | details | 06.09.2023 |
France: Lyon - Doubles - Main |
| 1/8-finals | Huertas Del Pino C./Huertas Del Pino A. | Duncan S./Willis M. | 2:1 (4:6, 6:4, 10:7) | details | 14.06.2023 |
Italy: Vicenza - Doubles - Main |
| 1/8-finals | Burruchaga R. A./Comesana F. | Duncan S./Willis M. | 2:1 (6:2, 3:6, 10:4) | details | 31.05.2023 |
| 1/8-finals | Caruso S./Gaio F. | Duncan S./Willis M. | CAN. | details | 30.05.2023 |
Portugal: Oeiras 4 - Doubles - Main |
| Quarter-finals | Duncan S./Willis M. | Johnson L./Verbeek S. | 0:2 (2:6, 4:6) | details | 18.05.2023 |
| 1/8-finals | Duncan S./Willis M. | Andreev A./Krutykh O. | 2:1 (7:66, 62:7, 10:5) | details | 16.05.2023 |
Spain: M25 Valldoreix - Doubles - Main |
| Quarter-finals | Duncan S./Willis M. | Barranco Cosano J./Winter Lopez B. | 1:2 (6:4, 4:6, 8:10) | details | 11.05.2023 |
| 1/8-finals | Duncan S./Willis M. | Guichard T./Saravanan A. | 2:0 (6:2, 6:3) | details | 09.05.2023 |
United Kingdom: M25 Nottingham 3 - Doubles - Main |
| Final | Hussey G./Jones B. | Duncan S./Willis M. | 0:2 (3:6, 2:6) | details | 06.05.2023 |
| Semi-finals | Perez A./Tyler J. | Duncan S./Willis M. | 0:2 (4:6, 3:6) | details | 05.05.2023 |
| Quarter-finals | Brady P./Jones A. | Duncan S./Willis M. | 0:2 (4:6, 3:6) | details | 04.05.2023 |
| 1/8-finals | Davis J./Hurrion M. | Duncan S./Willis M. | 0:2 (4:6, 65:7) | details | 03.05.2023 |
United Kingdom: M25 Nottingham 2 - Doubles - Main |
| 1/8-finals | Duncan S./Willis M. | Hignett L./MacKinlay J. | 1:2 (7:64, 3:6, 8:10) | details | 25.04.2023 |
Croatia: Split - Doubles - Main |
| 1/8-finals | Ivanovski K./Mikrut L. | Duncan S./Willis M. | 2:0 (6:4, 6:3) | details | 12.04.2023 |
France: Saint Brieuc - Doubles - Main |
| Quarter-finals | Duncan S./Willis M. | Eysseric J./Pel D. | 0:2 (4:6, 4:6) | details | 23.03.2023 |
| 1/8-finals | Bittoun C./Pozzi D. | Duncan S./Willis M. | 0:2 (5:7, 1:6) | details | 22.03.2023 |
Canada: M25 Montreal - Doubles - Main |
| Final | Aguilar J. C. M./Tyler J. | Duncan S./Willis M. | 2:1 (6:4, 5:7, 11:9) | details | 11.03.2023 |
| Semi-finals | Duncan S./Willis M. | Jones B./Whitehouse M. | 2:1 (6:3, 5:7, 10:8) | details | 10.03.2023 |
| Quarter-finals | Ogura K./Stakusic M. | Duncan S./Willis M. | 0:2 (1:6, 4:6) | details | 10.03.2023 |
| 1/8-finals | Flores J./Maginley J. | Duncan S./Willis M. | 0:2 (3:6, 1:6) | details | 08.03.2023 |
USA: Rome US - Doubles - Main |
| Quarter-finals | Galarneau A./Leshem E. | Duncan S./Willis M. | 2:1 (6:4, 3:6, 11:9) | details | 23.02.2023 |
| 1/8-finals | Hijikata R./Martin A. | Duncan S./Willis M. | WO. | details | 22.02.2023 |
United Kingdom: M25 Bath - Doubles - Main |
| Final | Duncan S./Willis M. | Jones B./Little D. | 2:0 (6:3, 6:4) | details | 11.02.2023 |
| Semi-finals | Duncan S./Willis M. | Paris J./Summers M. | 2:0 (6:3, 6:2) | details | 10.02.2023 |
| Quarter-finals | Duncan S./Willis M. | Martin T./Shaw M. | 2:0 (6:1, 6:4) | details | 09.02.2023 |
| 1/8-finals | Duncan S./Willis M. | Bowden L./Canter A. | 2:0 (6:3, 6:1) | details | 07.02.2023 |
United Kingdom: M25 Sunderland - Doubles - Main |
| 1/8-finals | Chidekh C./Sanchez L. | Duncan S./Willis M. | 2:1 (7:65, 4:6, 10:8) | details | 24.01.2023 |