It started as a trickle, but now it's a flood. Set piece mania has taken over the Premier League, with the past five seasons seeing teams take advantage of these situations for maximum benefit.
Arsenal's dominance from corners and free kicks is now globally revered, Brentford's long throws are threatening to reshape the tactical makeup of the league, while Tottenham Hotspur, Aston Villa and Crystal Palace are three further teams that can turn just about any set piece into a well-worked goal.
But what has changed?