Comparing the abilities and impact of players from different eras is notoriously, maybe impossibly, difficult, though that hasn’t stopped thousands of journalists, pundits and barroom thinkers having a go. The speed and athleticism of the modern game would leave many past greats puffing and blowing long before half-time, while some modern players would wilt under the physical challenge of previous eras. The equipment, character and even some of the rules of the game have changed.
