Grasshoppers are the latest top division club to suffer an upset in the Swiss Cup after a 0-2 defeat away to Bellinzona.
Sunday's result comes hot on the heels of reverses for Sion and Aarau. On Saturday, Young Boys of Berne thrashed Sion 3-0 while Schaffhausen triumphed 4-3 over Aarau in a penalty shootout.
In other matches on Sunday, Luzerne took Aarau apart 5-1, Yverdon beat Soleure 1-0, Schötz achieved a 2-1 victory over Wohlen, Thun won 1-0 over Delémont and Fribourg beat Vevey 3-2.
swissinfo with agencies