Everton manager Roberto Martinez has expressed his disappointment with the behaviour of Chelsea's players during the 1-0 defeat at Stamford Bridge after Branislav Ivanovic appeared to push his head into James McCarthy's back following a melee.
Gareth Barry was sent off later in the game for a second yellow card just seconds before Willian scored a dramatic winner for the Blues in the 88th minute.
The incident involving Barry sparked a melee with Chelsea defender Ivanovic grabbing McCarthy by the throat before appearing to push his forehead into the Everton midfielder.
"The second yellow card for Gareth Barry is very harsh. It's an unfortunate goal to give away, the ball goes through a players' legs. But it allows us to carry on with a good level of performance," Martinez said.
"My players were really upset about (the incident). It's the reaction of the Chelsea players you don't like. Ivanovic grabs James McCarthy by the throat,"
"You need a strong referee for those matters. You have to take your chances. You don't want to see the incidents we saw at the end. I was disappointed with the manner in which the referee dealt with it."
Meanwhile the boss also left frustrated after losing a point following an impressive performance from his defence.
"The result is hard to take. You believe you'll get what you deserve - we didn't," he said.
"It was a performance full of spirit. Defensively we were very good and we created the best chances. There were a couple of world-class saves from Petr Cech."