| Lithuanian Int. Qual | 2019/06/06 10:40 | Schwarz, Jonas v Markus Barth | W | 1-2 |
| Latvia Int. Qual | 2019/05/31 07:30 | Markus Barth v Parkhoei, Axel Henrik | L | 1-2 |
| Latvia Int. Qual | 2019/05/30 14:00 | Markus Barth v O Brien, Jack Joseph | W | 2-0 |
| Open de Suisse - Doubles Femmes - Qualif. | 2019/02/27 08:20 | Doder, Andrija v Markus Barth | W | 0-2 |