Stoke manager Tony Pulis expressed his frustration at the decision not to send off Chelsea defender David Luiz for a "dreadful" challenge on Jonathan Walters late in the defeat by Chelsea.
Referee Michael Oliver booked the Brazilian for the two-footed tackle, which made glancing contact with the Stoke player's shin in the 90th minute.
"It's a dreadful challenge," Pulis said. "You expect a referee of Premier League quality to deal with it.
"It is a very, very bad challenge."
Walters reacted furiously to the tackle, confronting Luiz near the touchline. However, after the match Chelsea manager Roberto Di Matteo moved to play the incident down.
"It is a strong tackle, a strong tackle," he said. "Fortunately it didn't catch him 100% but the referee made the decision and we accept that."
Pulis was also extremely critical of Chelsea over their attempts to win penalties using "simulation" during the game.
Defender Branislav Ivanovic was fortunate to escape a booking for a dive in the penalty area during the first half, while Oscar was shown the yellow card as he attempted to win a penalty after half-time.
