Sergiño Dest and Barcelona suffered another heavy defeat on their visit to Benfica, while Brenden Aaronson put in a solid shift for Salzburg, who beat Tim Weah and Lille thanks to a pair of spot kicks.
Chris Richards and Hoffenheim got the shutout but were left frustrated on the day as they could not find the goals to break a scoreless draw with Arminia Bielefeld.
Jordan Pefok was the hero of the day for Young Boys, as his opportunistic last-second goal gave his team a stunning victory over Manchester United as the Champions League group stage kicked off.
