LONDON - Chelsea striker Diego Costa has been banned for three matches with immediate effect after being found guilty of a violent conduct charge, the Football Association announced Friday. The Spain international was suspended after a regulatory commission ruled he had stamped on the ankle of Liverpool's Emre Can in the 12th minute of Tuesday's League Cup semi-final second leg at Stamford Bridge, which Chelsea won 1-0 to complete a 2-1 aggregate victory. There is no right of appeal and Costa will now miss Premier League leaders Chelsea's match at home to title rivals Manchester City on Saturday and subsequent games against Aston Villa and Everton. The incident was reviewed on video by referee Michael Oliver after the match official did not see it in real time.