Borussia Dortmund head coach Peter Bosz said his whole team were to blame for the slack defending that saw them lose 3-1 to Real Madrid on Tuesday.
A stunning Gareth Bale volley and two goals from Cristiano Ronaldo on his 400th appearance for the club gave Madrid a first win at Signal Iduna Park in the Champions League.
Pierre-Emerick Aubameyang got a goal back for Dortmund before Ronaldo made it 3-1 late on, and although the hosts produced plenty of attacking endeavour, only a handful of fine saves from Roman Burki prevented a more one-sided scoreline.
The Bundesliga leaders were particularly suspect at full-back, with Jeremy Toljan and Lukasz Piszczek frequently caught out of position on the counter-attack before the former was replaced by Mahmoud Dahoud after an hour.