Cesc Fabregas missed a penalty on what could be his final Chelsea appearance as the FA Cup holders beat Nottingham Forest in the third round.
Fabregas is set to leave Chelsea in the transfer window but could not sign off with a goal on his 198th appearance after seeing his first half spot kick saved by Luke Steele.
Maurizio Sarri named Callum Hudson-Odoi in his starting XI amid speculation the academy product could move to Bayern Munich and he set up Alvaro Morata's first goal in seven games to put Chelsea in front on 49 minutes.