The loss to the Championship side was Wenger’s first at home to lower league opposition in his 17-year career in England and the worst possible preparation for the visit of the runaway Bundesliga leaders.
Kazim-Richards’ goal came amid a dominant Arsenal performance, but the recalled Alex Oxlade-Chamberlain and Gervinho were both guilty of wasting chances to put Arsenal into the last eight.
With 20 minutes left, Wenger had seen enough and made a triple substitution as Walcott, Wilshere and Cazorla replaced Gervinho, Rosicky and Alex Oxlade-Chamberlain.
The match ended 1-0 with Blackburn at the winning end. Angry fans revolts and calls for Arsene Wenger’s resignation, will he resign?