Pia-Lisa Schoell/Klaudius Harsch (Fuessen, GER) qualified for the 2021 Oberstdorf International Mixed Doubles Cup playoffs, dropping their quarterfinals match 8-7 against Zuzanna Rybicka/Bartosz Dzikowski (Lodz, POL). of the 2021 Oberstdorf International Mixed Doubles Cup in Oberstdorf, Germany;
 
Schoell/Harsch finished 3-0 in the 16-team qualifying round. . In their opening game, Schoell/Harsch defeated Martina Fenykova/Martin Votava (Prague, CZE) 9-1, then won 12-4 against Katja Schlegel/Sebastian Keiser (Zug, SUI) and 7-3 against Adela Walczak/Andrzej Augustyniak (Lodz, POL) in their final qualifying round match.
 
. For week 6 of the event schedule, Schoell/Harsch did not improve upon their best events, remaining at 778th place on the World Ranking Standings with 56.769 total points. Schoell/Harsch ranks 342nd overall on the Year-to-Date rankings with 0.000 points earned so far this season.