Rugby federal. Tournoi RBS 6 Nations. FFR (Fédération Française de Rugby) Ligue Nationale de Rugby. ERC. 2014-04-07 19:31:39HIGH WYCOMBE, ENGLAND - APRIL 06: Nathan Hughes (L) of Wasps runs at Jimmy Cowan of Gloucester during the Amlin Challenge Cup Quarter Final match between London Wasps and Gloucester at Adams Park on April 6, 2014 in High Wycombe, England. (Photo by Ben Hoskins/Getty Images)Ben Hoskins 2014-04-07 20:42:07HIGH WYCOMBE, ENGLAND - APRIL 06: Billy Twelvetrees of Gloucester speaks with referee Marius Mitrea during the Amlin Challenge Cup Quarter Final match between London Wasps and Gloucester at Adams Park on April 6, 2014 in High Wycombe, England. (Photo by Ben Hoskins/Getty Images)Ben Hoskins 2014-04-07 20:41:52HIGH WYCOMBE, ENGLAND - APRIL 06: Sione Kalamafoni of Gloucester is tackled by Phil Swainston (L) and Guy Thompson (R) of Gloucester during the Amlin Challenge Cup Quarter Final match between London Wasps and Gloucester at Adams Park on April 6, 2014 in High Wycombe, England.