Just started watching and keeping up with arsenal this season. What is with them and always scoring late game? They do it pretty often. Did it against City, Brentford, Chelsea, United (twice). Is there a reason for this? They look like an entirely different team once the 80th minute hits.
They are the most dominant team in terms of field tilt and how deep the opponent sits back. Source
This means teams will be defending their own box for 80 minutes and will get tired. They are then more likely to switch off and make mistakes the longer the match goes and the more tired they become.
Another factor is that because they have a great record of scoring late on, the players will believe that they can score. The opposite is true that the opposition may believe they will concede late on because of Arsenal’s record. This was certainly the case with Manchester United under Fergie.