| Пан Американско Първенство | 09/10 18:30 | - | Matthew Lehmann v Адриан Перес | L | 0-4 | |
| WTT Feeder Westchester | 05/12 21:30 | - | Matthew Lehmann v Рареш Сипос | - | View | |
| Полша Оупън | 03/12 14:00 | - | Matthew Lehmann v Jaroslaw Tomicki | L | 0-3 | |
| Полша Оупън | 03/11 14:20 | - | Matthew Lehmann v Рафаел Турини | L | 1-3 | |
| Czech Republic First League | 03/08 10:58 | - | Матей Сташ v Matthew Lehmann | L | 3-2 | |
| Czech Republic First League | 03/08 10:15 | - | Воитеч Климек v Matthew Lehmann | L | 3-2 | |
| Czech Republic First League | 02/23 11:23 | - | Matthew Lehmann v Томас Колдас | L | 2-3 | |
| Czech Republic First League | 01/25 10:47 | - | Лукас Борука v Matthew Lehmann | W | 0-3 | |
| North American Open | 12/05 21:55 | - | Beixun Zeng v Matthew Lehmann | L | 4-0 | |
| Czech Republic First League | 11/24 09:40 | - | Matthew Lehmann v Марк Обесло | L | 2-3 | |
| Summer Universiade | 07/09 10:45 | - | Matthew Lehmann v Уанг-Уей Пенг | L | 0-4 | |
| Slovenia Open | 05/08 13:40 | - | Amalraj Anthony v Matthew Lehmann | L | 3-0 |