| QSF 3 Doha | 05/24 15:00 | 3 | Khan, Shahjahan v Abdulla Al-Tamimi | 0-3 | |
| QSF 3 Doha | 05/23 14:20 | 8 | Hammamy, Karim El v Khan, Shahjahan | 1-3 | |
| QSF 3 Doha | 05/22 13:45 | 7 | Walsh, Tom v Khan, Shahjahan | 2-3 | |
| PSA World Championships | 05/09 09:50 | 7 | Ibrahim, Youssef v Khan, Shahjahan | 3-0 | |
| El Gouna International | 04/19 14:45 | 7 | Marche, Gregoire v Khan, Shahjahan | 3-0 | |
| Optasia Championships | 03/12 12:45 | 7 | Khan, Shahjahan v Leandro Romiglio | 0-3 | |
| Squash in the Land | 03/07 23:45 | 3 | Khan, Shahjahan v Lobban, Greg | away | |
| Squash in the Land | 03/06 22:00 | 8 | Khan, Shahjahan v Matias Knudsen | 3-2 | |
| Motor City Open 2020 | 01/31 23:00 | 7 | Aly Hussein v Khan, Shahjahan | 3-0 | |
| JP Morgan Tournament of Champions | 01/17 22:45 | 7 | Khan, Shahjahan v Rooney, Patrick | 0-3 | |
| Florida Open | 01/09 17:00 | 7 | Khan, Shahjahan v Leandro Romiglio | 1-3 | |
| World Team Championships | 12/16 22:00 | 1 | Khan, Shahjahan v Evans, Emyr | 0-3 | |
| World Team Championships | 12/14 05:00 | 7 | Khan, Shahjahan v Chileshe, Lwamba | 3-1 | |
| New Zealand Open | 12/05 05:45 | 7 | Velavan Senthilkumar v Khan, Shahjahan | 3-2 | |
| Hong Kong Open | 11/28 06:00 | 8 | Farag, Ali v Khan, Shahjahan | 3-0 | |
| Hong Kong Open | 11/27 07:00 | 7 | Khan, Shahjahan v Hammamy, Karim El | 3-2 | |
| Hong Kong Open | 11/27 07:00 | 7 | Khan, Shahjahan v Aly Abou Eleinen | Cancelled | |
| HKFC Open | 11/22 10:00 | 8 | Lake, Nathan v Khan, Shahjahan | 3-0 | |
| HKFC Open | 11/21 10:00 | 7 | Walsh, Tom v Khan, Shahjahan | 1-3 | |
| US Open | 10/08 19:00 | 8 | Brownell, Timothy v Khan, Shahjahan | 3-1 | |
| US Open | 10/07 21:00 | 7 | Hammamy, Karim El v Khan, Shahjahan | 1-3 | |
| Qatar Classic | 09/10 13:45 | 7 | Khan, Shahjahan v Parker, George | 0-3 | |
| Paris Squash | 08/28 12:15 | 8 | Khan, Shahjahan v Elias, Diego | 0-3 | |
| Paris Squash | 08/27 16:15 | 7 | Balazs Farkas v Khan, Shahjahan | 1-3 | |
| El Gouna International | 05/26 15:15 | 7 | Mosaad, Omar v Khan, Shahjahan | 3-0 | |
| PSA World Championships | 05/04 23:45 | 7 | Elshorbagy, Marwan v Khan, Shahjahan | 3-1 | |
| Irish Squash Open 2019 | 04/21 17:00 | 2 | Ng, Eain Yow v Khan, Shahjahan | 3-0 | |
| Irish Squash Open 2019 | 04/20 13:45 | 3 | Serme, Lucas v Khan, Shahjahan | 1-3 | |
| Irish Squash Open 2019 | 04/19 13:15 | 8 | Kamal, Mohd Syafiq v Khan, Shahjahan | 0-3 | |
| British Open 2019 | 04/09 11:45 | 7 | Khan, Shahjahan v Lau, Tsz Kwan | 2-3 |