| Spanish Open | 02/08 11:45 | 2 | Steffen Mengel v Kirill Gerassimenko | L | 1-4 | |
| Spanish Open | 02/07 18:55 | 3 | Steffen Mengel v Joao Geraldo | W | 4-2 | |
| Spanish Open | 02/07 14:25 | 4 | Leonardo Mutti v Steffen Mengel | W | 0-4 | |
| Spanish Open | 02/06 19:55 | 5 | Steffen Mengel v Kwangil Baek | W | 4-2 | |
| Spanish Open | 02/06 14:00 | 6 | Steffen Mengel v Enzo Angles | W | 4-3 | |
| German Open | 01/28 08:30 | - | Hiroto Shinozuka v Steffen Mengel | W | 3-4 | |
| Champions League | 01/15 19:50 | 3 | Steffen Mengel v Darko Jorgic | W | 3-2 | |
| European Champions League | 12/05 18:00 | - | Steffen Mengel v Taras Merzliken | W | 3-2 | |
| European Champions League | 10/24 19:00 | - | Jens Lundquist v Steffen Mengel | L | 3-1 | |
| European Champions League | 10/24 18:00 | - | Jon Persson v Steffen Mengel | L | 3-0 | |
| European Champions League | 10/16 17:00 | - | Steffen Mengel v Dimitrij Ovtcharov | L | 0-3 | |
| German Open | 10/09 18:45 | - | Steffen Mengel v Simon Gauzy | L | 0-4 | |
| German Open | 10/08 11:00 | - | Steffen Mengel v Kakeru Sone | W | 4-3 | |
| European Champions League | 09/12 17:10 | - | Endika Diez v Steffen Mengel | W | 0-3 | |
| Japan Open | 06/12 00:50 | - | Steffen Mengel v Yuma Tsuboi | W | 4-1 | |
| Thailand Open | 05/24 11:20 | - | Yuta Tanaka v Steffen Mengel | L | 4-3 | |
| Thailand Open | 05/24 07:25 | - | Hongchan Seo v Steffen Mengel | W | 0-4 | |
| Tsjechië - Extraleague | 03/24 09:55 | - | Steffen Mengel v Dang Qiu | L | 3-4 | |
| Tsjechië - Extraleague | 03/23 17:30 | - | Steffen Mengel v Vitor Ishiy | W | 4-1 | |
| Tsjechië - Extraleague | 03/23 13:25 | - | Ruwen Filus v Steffen Mengel | W | 3-4 | |
| Tsjechië - Extraleague | 03/22 18:45 | - | Steffen Mengel v Bence Majoros | W | 4-1 | |
| Qatar Open - Dames | 11/16 19:57 | - | Sheng Peng Fan v Steffen Mengel | L | 3-0 | |
| Qatar Open - GD | 11/06 09:00 | 1 | Steffen Mengel v Robin Devos | L | 2-4 | |
| Qatar Open - Dames | 10/26 18:09 | - | Steffen Mengel v Georgios Stamatouros | W | 3-1 | |
| Qatar Open - Dames | 09/28 13:15 | - | Dimitrij Ovtcharov v Steffen Mengel | L | 3-1 | |
| Qatar Open - Dames | 03/16 20:07 | - | Steffen Mengel v Thomas Keinath | L | 1-3 | |
| Qatar Open - Dames | 09/01 19:55 | - | Steffen Mengel v Daniel Habesohn | L | 2-3 | |
| Qatar Open - Dames | 09/01 18:04 | - | Steffen Mengel v Ovidiu Ionescu | L | 0-3 | |
| Qatar Open - GD | 04/28 12:55 | 1 | Steffen Mengel v Alexey Liventsov | L | 0-4 | |
| Qatar Open - GD | 04/20 04:45 | 5 | Steffen Mengel v Maharu Yoshimura | L | 3-4 |