Arsenal 1-1 Atletico Madrid: 5 Talking Points

#1 Defensive blunders cost Arsenal, again

The Arsenal skipper couldn't stop the fast and wiry Frenchman

Nacho Monreal's ignorance let Griezmann stay onside, Laurent Koscielny's mistake let him go one-on-one with the keeper, David Ospina failed to stop a ball going though his legs, and Mustafi slipped right when a clearance was desperately needed from his side: all these events happened one after the other, and led to the France international's equalizer on the day.

Even one defensive blunder will cost you severely in a big European match like this, and Arsenal, despite an improved performance at the back, suffered due to the same old woes yet again.

It was Wenger's last European game at home as an Arsenal manager, but his team could not step up for him when it mattered the most. They lacked clinical finishing in the final third, they capitulated in defence at a crucial juncture of the game, and they couldn't stamp their authority at home over a team reduced to 10-men.

If they want to go to Lyon to contest in the finals of the tournament, they have to do it the hard way in Madrid next week, against a team that has conceded just four home goals in the entire season so far.