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HIGH WYCOMBE, ENGLAND - APRIL 05: Billy Vunipola of London Wasps tries to burst through the Leinster defence during the Amlin Challenge Cup Quarter Final between London Wasps and Leinster at Adams Park on April 5, 2013 in High Wycombe, England. (Photo by Mike Hewitt/Getty Images)

HIGH WYCOMBE, ENGLAND - APRIL 05: Billy Vunipola of London Wasps tries to burst through the Leinster defence during the Amlin Challenge Cup Quarter Final between London Wasps and Leinster at Adams Park on April 5, 2013 in High Wycombe, England. (Photo by Mike Hewitt/Getty Images)
Getty Images

Getty Images Sport Mike Hewitt