Champions League: Monaco stuns Arsenal, Leverkusen upsets Atletico

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.