Chelsea and West Brom could face punishment from the Football Association (FA) after being charged over their players' conduct following a 2-2 Premier League draw on Wednesday 13 January. A late goal from James McClean secured a point for the Baggies at Stamford Bridge, but it was a feisty encounter during which referee Anthony Taylor produced no fewer than six yellow cards.
Chelsea's Diego Costa and West Brom defender Jonas Olsson had a running battle and there were also heated exchanges between the striker and Boaz Myhill as well as between James McClean and Thibaut Courtois. However, it is an incident in the second half that appears to have led to the charge, with players from each side surrounding the referee in the aftermath of a challenge on Costa from Claudio Yacob.
With the West Brom midfielder having already been cautioned for a first-half foul on Willian, many felt that he should have been sent off. Taylor kept his cards in his pocket on that occasion, though, and Tony Pulis quickly responded by replacing Yacob with Saido Berahino.
"Chelsea and West Bromwich Albion have both been charged for failing to ensure their players conducted themselves in an orderly fashion, " an official FA statement read.
"The charge relates to an incident which occurred in or around the 58th minute of their fixture on Wednesday 13 January 2016. Both clubs have until 6pm on 20 January 2016 to respond to the charge."
Costa supposedly took his frustrations out on the tunnel wall after full-time, while Chelsea boss Guus Hiddink was evidently irritated that West Brom had not been reduced to 10 men.
He said: "The manager [Pulis] made a wise decision when he took over the role off the referee and took off Claudio Yacob. The referee forgot to do it.
"It was twice or three times [he could have had] a yellow. I think it was a big moment. From there on we could have dominated a bit more."
Chelsea have encountered this charge already this season. Under Jose Mourinho, the Blues and West Ham were fined £50,000 ($71,300) and £40,000 respectively in November 2015 after admitting misconduct during the home side's 2-1 win at Upton Park. The FA said that both clubs were "severely warned" over their future conduct.