The Spaniard was dismissed after a second bookable offence after conducting a running feud with Gareth Barry all afternoon.
His departure came after Barry nibbled at the his heels near the end and Costa reacted by squaring up to the Everton veteran.
He reportedly head charged him three times ( not a head-butt ) and bared his teeth as if thinking of biting him before changing his mind.
It was the first time the player has been dismissed in a Chelsea shirt and there can be no appeal for two yellows so it will be a Costa-free Stamford Bridge clash!