Wallaby Matt Giteau ruled out of Rugby Championship clash with Argentina

Australia inside centre suffering from sternum sorenessReplaced by Christian Leali’ifano in travelling party to MendozaThe intriguing battle for Wallabies inside backs spots has taken another twist with Matt Giteau ruled out of Saturday’s Test against Argentina.Giteau was cleared of any serious damage after scans on his nose and chest after he was on the receiving end of a battering during his first Test appearance in four years in Saturday’s 24-20 comeback win over South Africa. Related: Post-siren try seals thrilling win for Wallabies over Springboks Related: Michael Cheika admits yelling ‘…