Arsenal manager Arsene Wenger reacts during their Champions League round of 16, first leg soccer match against AS Monaco at Emirates Stadium in London, Feb 25,2015. [Photo/Agencies]

Arsenal pulled one back in stoppage time when substitute Alex Oxlade-Chamberlain curled home from the edge of the area, but Monaco scored even later to restore their two-goal advantage when substitute Yannick Ferreira-Carrasco scored with a shot that went in off the post.

Arsenal wasted several chances with Olivier Giroud spurning four scoring opportunities to leave Arsenal with a mountain to climb when Wenger takes his side back to the principality for the second leg on March 17.