After Italy’s all-time leading scorer Luigi Riva was honoured before kickoff with the country’s highest sports honour, Higuain scored twice and Buffon preserved a clean sheet with a spectacular save as Serie A leader Juventus won 2-0 at 10-man Cagliari on Sunday. Buffon shared a long embrace with the 72-year-old Riva in the pre-match ceremony for the golden collar award.