Five crushing stats for Arsenal after record defeat to Bayern MunichPublished8 March 2017Image source, EPAImage caption, At 5-1 down from the first leg, no team had ever turned round a four-goal deficit in the Champions League before. But the night started off well enough for Arsenal. Theo Walcott bagged an early goal and Gunners' hopes were briefly raised.Image source, Getty ImagesImage caption, Things started going badly when defender Laurent Koscielny was sent off in the 53rd minute for bringing down Bayern striker Robert Lewandowski, who got up to convert the penalty. A hard task, just got harder. The Gunners have now been knocked out of the Champions League at the last 16 stage for seven successive seasons.Image source, APImage caption, And from then on, things just got worse! Bayern scored four goals in 17 devastating minutes. The 10-2 aggregate defeat is the worst ever suffered by an English side in the Champions League. Oh dear!Image source, EPAImage caption, Manager Arsene Wenger didn't look happy on the touchline, will he still be at Arsenal next season? Fans were calling for him to be sacked by the end of the game. This was Arsenal's biggest home loss since November 1998 (5-0 against Chelsea in the League Cup), and their biggest since they moved to the Emirates Stadium in 2006.Image source, PAImage caption, Star striker Alexis Sanchez has been in the headlines recently, will he be keen to leave the club now? As Bayern scored their fifth goal, some people thought it looked like he was laughing on the bench. Only one Champions League tie has seen a greater margin of victory for a team - Bayern Munich v Sporting Lisbon (12-1, 2009). It's been a bad week to be a Gunner.