The closer a game is, the more injury time is played. That's understandable - how many times have we seen referees ending thrashings just a second or two early, perhaps to protect the dignity of the losing team, or simply because everyone's lost interest. But there appears to be a significant bias towards big clubs when the game is still in the balance. If you're playing at one of the big clubs and you're two goals down, you get an average of 3 minutes and 45 seconds to claw back the deficit. If you're two goals up, the big club gets more than five minutes to try and break you down.