• Losing manager fumes over challenges on Emre Can and Martin Skrtel• José Mourinho defends forward and fumes at Sky pundit• Match report• Barney Ronay: Diego Costa tries to light up Chelsea with dark arts• Five talking pointsBrendan Rodgers accused Diego Costa of deliberately stamping on Emre Can and Martin Skrtel during a fiery Capital One Cup semi-final second leg that his Liverpool team lost narrowly to Branislav Ivanovic’s extra-time goal for Chelsea.The Liverpool manager did nothing to conceal his unhappiness at Costa, who could face disciplinary proceedings from the Football Association because the referee, Michael Oliver, took no action on either occasion.