Cameroon forward Jean-Pierre Assale and Ivory Coast forward Roger Assale were both on target in Young Boys' 2-0 win over Feyenoord.
Two first-half goals were enough for the Swiss outfit to see off their Dutch visitors in Thursday's Europa League outing.
Assale broke the deadlock at Stade de Suisse with his 14th-minute strike from the penalty spot.
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The goal was the Ivorian's third effort in all competitions this season and his second in the European competition.