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.<br />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.<br /><br />"It's a dreadful challenge," Pulis said. "You expect a referee of Premier League quality to deal with it.<br />"It is a very, very bad challenge."<br />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.<br />"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."<br />Pulis was also extremely critical of Chelsea over their attempts to win penalties using "simulation" during the game.<br />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.
