| PSA World Championships | 05/12 18:45 | 8 | Asal, Mostafa v Mueller, Nicolas | 3-0 | |
| PSA World Championships | 05/10 14:45 | 7 | Mueller, Nicolas v Hamza Khan | 3-1 | |
| El Gouna International | 04/21 17:30 | 9 | Farag, Ali v Mueller, Nicolas | 3-1 | |
| El Gouna International | 04/20 10:45 | 8 | Mueller, Nicolas v Kandra, Raphael | 3-1 | |
| El Gouna International | 04/19 10:45 | 7 | Mueller, Nicolas v Malik, Curtis | Cancelled | |
| El Gouna International | 04/19 09:45 | 7 | Mueller, Nicolas v Ibrahim Elkabbani | 3-0 | |
| Black Ball Open | 04/12 18:00 | 8 | Mueller, Nicolas v Hesham, Mazen | 0-3 | |
| Black Ball Open | 04/11 16:15 | 7 | Mueller, Nicolas v Aly Ezzat | 3-0 | |
| Optasia Championships | 03/12 14:15 | 7 | Mueller, Nicolas v Harrity, Todd | 2-3 | |
| Canadian Open | 03/06 01:00 | 3 | Soliman, Youssef v Mueller, Nicolas | 3-0 | |
| Canadian Open | 03/05 02:30 | 8 | Singh, Abhay v Mueller, Nicolas | 1-3 | |
| Windy City Open 2020 | 02/22 18:45 | 8 | Hesham, Mazen v Mueller, Nicolas | 3-0 | |
| Windy City Open 2020 | 02/21 18:45 | 7 | Leung, Henry v Mueller, Nicolas | 1-3 | |
| Motor City Open 2020 | 02/02 23:00 | 3 | Elias, Diego v Mueller, Nicolas | 3-0 | |
| Motor City Open 2020 | 02/01 23:00 | 8 | Parker, George v Mueller, Nicolas | 1-3 | |
| JP Morgan Tournament of Champions | 01/17 22:00 | 7 | Mueller, Nicolas v Elnawsany, Yahya | 1-3 | |
| World Team Championships | 12/16 05:00 | 2 | Farag, Ali v Mueller, Nicolas | 3-0 | |
| World Team Championships | 12/15 02:00 | 3 | Mueller, Nicolas v Brownell, Timothy | 3-2 | |
| World Team Championships | 12/13 23:00 | 7 | Mueller, Nicolas v Joseph White | 0-3 | |
| Hong Kong Open | 11/28 07:00 | 8 | Mosaad, Omar v Mueller, Nicolas | 3-1 | |
| Czech Open | 11/05 15:30 | 2 | Mueller, Nicolas v Kandra, Raphael | 0-3 | |
| Czech Open | 11/04 12:10 | 3 | Mueller, Nicolas v Serme, Lucas | 3-0 | |
| Czech Open | 11/03 15:00 | 8 | Mueller, Nicolas v Yannick Wilhelmi | 3-0 | |
| Grasshopper Cup | 10/20 17:45 | 3 | Elshorbagy, Marwan v Mueller, Nicolas | 2-0 | |
| Grasshopper Cup | 10/19 15:45 | 8 | Steinmann, Dimitri v Mueller, Nicolas | 1-2 | |
| US Open | 10/09 21:45 | 9 | Momen, Tarek v Mueller, Nicolas | 3-0 | |
| US Open | 10/08 18:00 | 8 | Lobban, Greg v Mueller, Nicolas | 2-3 | |
| Qatar Classic | 09/13 15:15 | 9 | Gawad, Karim Abdel v Mueller, Nicolas | 3-1 | |
| Qatar Classic | 09/11 15:15 | 8 | Mueller, Nicolas v Ng, Eain Yow | 3-1 | |
| Paris Squash | 08/28 14:45 | 8 | Lobban, Greg v Mueller, Nicolas | 3-0 |