TWO-NIL is never enough and safe in a football game. Ask any managers, and they will tell you to go for the kill and get the third goal. Anything can happen at two-nil. Either your team hold on and secure the win, or you concede a goal and get a nervy ending or concede twice and lose two points instead of securing the three points.
Over the weekend, a few teams went up two-nil, and all the scenarios described above happened. Starting with the Battle of London, where Chelsea went two-nil up and Mauricio Pochettino looked like he was going to secure his first big team scalp at Stamford Bridge. Instead of going home with three points, his team went home with one due to a goalkeeping error by Robert Sanchez that enabled Arsenal to come back to the game.