Chelsea registered a 2-0 victory over their London rivals Tottenham in the Premier League but the win was overshadowed by allegations of racist abuse.
It's after Chelsea defender Antonio Rudiger reported he had been subjected to discriminatory chanting by fans.
Brazilian forward Willian scored both goals before Spurs striker Son Heung-Min was shown a straight red card for violent conduct.
Elsewhere, Watford beat Manchester United 2-0 to win their first game under new manager Nigel Pearson.


UAE qualifies for FIFA Arab Cup quarter-finals
Desert Vipers beat MI Emirates by one run in a last-ball finish
Red Bull consultant Marko to leave F1 team
Dubai Basketball continues strong form across Europe
Fabrizio Romano reflects on independent media’s impact at BRIDGE
