Alice Cobelli/Amos Mosaner (Cembra-Lisignago , ITA) lost 6-3 to Jenny Perret/Martin Rios (Glarus, SUI) in the Final of the International Mixed Doubles St. Gallen, held October 2 - 4, 2020 in St. Gallen, Switzerland. To advance to the championship game, Cobelli/Mosaner won 8-2 over Dorottya Palancsa/Zsolt Kiss (Budapest, HUN) in the semifinals of the 2020 International Mixed Doubles St. Gallen in St. Gallen, Switzerland;
 
Cobelli/Mosaner finished 8-1 in the 17-team qualifying round. . In their opening game, Cobelli/Mosaner defeated Johanna Heldin/Daniel Magnusson (Uppsala, SWE) 8-4, then won 10-8 against Palancsa/Kiss and 9-4 against Daniela Rupp/Kevin Wunderlin (Aarau, SUI). Cobelli/Mosaner won 8-7 against Hannah Augustin/Martin Reichel (Kitzbuehel, AUT), then won 11-4 against Marie Turmann/Harri Lill (Tallinn, EST) and 9-5 against Laura Engler/Tom Winkelhausen (St. Gallen, SUI). Cobelli/Mosaner went on to lose 11-4 against Therese Vestman/Robin Ahlberg (Stockholm, SWE). Cobelli/Mosaner responded with a 8-3 win over Perret/Rios. Cobelli/Mosaner won 8-1 against Adela Walczak/Andrzej Augustyniak (Lodz, POL) in their final qualifying round match.
 
Cobelli/Mosaner ranks th overall on the Year-to-Date rankings with points earned so far this season.