Aaron Ramsey went on one of his marauding runs early in the game, got to the box and tried a shot on his left foot, surrounded by three players - Kante, Drinkwater and Morgan - who are instructed to hunt in packs. This isn't naive, last minute panic defending - the reason for pressing opposition players in packs is clear and very, very effective - if the ball bounces loose, one of the three or four is bound to win it.