The knockout stage of the football World Cup is underway. Two big showdowns have produced the first two quarter-finalists of the tournament...and provided a valuable lesson in the process. Mbappe magic ends Messi’s Argentina campaign in seven-goal classic (France won 4-3) and Cavani brace knocks out Ronaldo’s Portugal (2-1) All action from our correspondent at WC 2018 in Russia the editor-in-chief of Sportdaily.ru Ivan Zhidkov