Keeping cool can often be the difference between seeing a result out or leaving empty handed.
Managers are supposed to instil a sense of discipline into their players as they seek to give themselves the best chance of securing a potentially crucial three points.
But sometimes things just don’t go to plan.
Coaches can only do so much before allowing their players to enter the action and hoping for the best.
Scroll through the gallery above to find out which team has received the most red cards since the start of the 2015/16 season.