Olivier Giroud’s last four goals in all competitions have been as a substitute.
Arsenal become the sixth team to win 50 CL home matches, after Real Madrid (79), FC Barcelona (72), Bayern München (68), Manchester United (67) and Juventus (51).
Theo Walcott is the eighth player to play 50 Champions League games for Arsenal.
Bayern conceded their first CL goal this season.
Arsenal have never lost three consecutive games in the Champions League.
Bayern Munich have won only one of their last six away games in the Champions League.
Bayern suffer their biggest group stage loss in the CL since 2 October 2012 vs BATE (3-1).