Former Australia pacer Mitchell Johnson on Sunday launched a scathing attack on Test skipper Pat Cummins after Justin Langer resigned as the head coach of the senior men's team. Cricket Australia on Saturday accepted men's team head coach Justin Langer's resignation. "Justin was offered a short-term extension to his current contract, which sadly he has opted not to accept," stated an official Cricket Australia release. "Pat Cummins has been lauded as some type of cricketing saint since his elevation to the top job this summer. Cummins might have delivered with the ball during the Ashes series, but he has failed his first big test as captain pretty miserably," Johnson wrote in a column for The West Australian, as reported by Fox Sports.