FC Sheriff and Anzhi Makhachkala contested an open but uninspiring Europa League stalemate in Group K.
Guimaraes cruised to a 4-0 win over Croatian side Rijeka to go top of Group I in the UEFA Europa League on Thursday.
St Gallen opened their Europa League account with goals from Goran Karanovic and Marco Mathys against 10-man Kuban Krasnodor.
Barach Yitzhaki missed a late penalty for Maccabi Tel-Aviv as they endured a forgettable Europa League stalemate at home to APOEL Nicosia.
Two goals in three minutes gave Chornomorets a shock 2-1 win over Dinamo Zagreb in their Europa League Group B opener.
A first-half goal from Ruslan Rotan was all that separated Dnipro from Romanian hosts Pandurii Targu-Jiu in Europa League Group E.
Jonathan Soriano scored a hat-trick as Salzburg secured a 4-0 opening-night victory over Elfsborg in the Europa League.