Burgering is not giving up yet. “Xavi Simons was talking about the ketchup bottle theory this week. I’m just going to assume that,” said the attacker. The theory was once created by Ruud van Nistelrooij. ‘Scoring goals is like holding a bottle of ketchup upside down. Sometimes you have to hold the bottle upside down for an eternity and nothing comes out. And sometimes there’s no stopping it.’