Saracens Billy Vunipola during Aviva Premiership match between Saracens and Worcester Warriors at Twickenham Stadium on 3rd Sept 2016 in London, England. (Photo by Kieran Galvin/NurPhoto via Getty Images)
Saracens Billy Vunipola during Aviva Premiership match between Saracens and Worcester Warriors at Twickenham Stadium on 3rd Sept 2016 in London, England. (Photo by Kieran Galvin/NurPhoto via Getty Images)