Five tactical tweaks that have made a difference in the Premier League

Around 10-15 years ago, a spate of false No. 9s appeared at the top level of European football, taking their lead from Lionel Messi's mesmeric performances for Barcelona. Ezequiel Lavezzi, Raheem Sterling and Roberto Firmino, among others, all tried their hand at the curious role, which involves playing up front but spending barely any time testing opposing centre-backs. Instead, the player drops back into midfield to conduct play and try to feed goal-hungry wide players.