Goalkeepers beware: Trionda World Cup ball hits ‘crisis’ point at certain speed

Some, like Luca Zidane, have been bamboozled and an academic paper bears out Joe Hart’s opinion about its movementPoor old Luca Zidane. The Algeria goalkeeper has had a turbulent time. In two matches he has conceded five goals, and a pair of them – first from Lionel Messi, then, more embarrassing, from Jordan’s Nizar al-Rashdan – have gone through his fingers.No doubt he has received messages of support from his father – at least he hasn’t butted anybody – but it is hardly the ideal performance on the world’s biggest…