Kevin De Bruyne has a chance to double City's lead, but his chance hits off the crossbar.
David Luiz made no attempt to play the ball against an onrushing Sergio Aguero, but should he have been shown red?
Gary Cahill diverted a Manchester City cross past the outstretched Thibaut Courtois.
English Premier League: Sergio Aguero (43') Man City 0-0 Chelsea
Manchester United midfielder Marouane Fellaini has said former manager Louis van Gaal was stricter in training than his successor Jose Mourinho.
English Premier League: Thibaut Courtois (21') Man City 0-0 Chelsea