Germany's Witthaus challenges Australia's Ciriello during their men's semifinal hockey match at Riverbank...
Germany's Matthias Witthaus (R) challenges Australia's Christopher Ciriello during their men's semifinal hockey match at the Riverbank Arena at the London 2012 Olympic Games August 9, 2012. REUTERS/Chris Helgren (BRITAIN - Tags: SPORT OLYMPICS FIELD HOCKEY)