LONDON, ENGLAND - SEPTEMBER 03: Billy Vunipola of London Wasps is tackled during the Aviva Premiership match between Saracens and London Wasps at Twickenham Stadium on September 3, 2011 in Twickenham, England. (Photo by Daniel Hambury/Getty Images)
LONDON, ENGLAND - SEPTEMBER 03: Billy Vunipola of London Wasps is tackled during the Aviva Premiership match between Saracens and London Wasps at Twickenham Stadium on September 3, 2011 in Twickenham, England. (Photo by Daniel Hambury/Getty Images)