Complex sentence: Wright's first game in charge was a second round, first leg tie in the UEFA Europa League against Rosenborg, with a 1--0 win and giving St Johnstone their first-ever away victory in European competition.
Split into simpler sentences: Wright's first game in charge was a UEFA Europa League tie against Rosenborg. St. Johnstone won 1--0, which was their first-ever away victory in European competition.