 Complete the following phrase:  During the 201718 season Salzburg had their best ever European campaign. They finished top of their Europa League group, for a record fourth time, before beating Real Sociedad and Borussia Dortmund thus making their first ever appearance in the UEFA Europa League semi-final. On 3 May 2018, he played in the Europa League semi-finals as Olympique de Marseille played out a 12 away loss but a 32 aggregate win to secure a place in the 