Arsenal’s Champions League hopes took a massive dent as Dimitar Berbatov scored against his old rivals in a 3-1 win for Monaco in the first leg of their last-16 clash.
Oxlade-Chamberlain came on late and looked to have given the hosts hope as he picked the ball up on the edge of the box before curling a superb 20-yard strike into the top corner in the 91st minute.
But Monaco had time to restore their two-goal cushion as Oxlade-Chamberlain was caught in possession, and substitute Carrasco was played in behind before drilling a low shot across Ospina and in off the far post to seal a superb victory for the Ligue 1 side.
Bayer Leverkusen beat Atletico Madrid 1-0 in the first leg of their last-16 UEFA Champions League clash at the BayArena on Wednesday night.
The Bundesliga side took a 57th-minute lead through midfielder Hakan Calhanoglu’s fiercely struck effort.
And despite Atletico substitute Fernando Torres having a second-half equaliser controversially ruled out, the visitors’ hopes of returning home to Madrid with a crucial away goal ended when midfielder Tiago Mendes was sent off 14 minutes from the end.