Serge Aurier grabbed a deserved equaliser for Nottingham Forest to hold Chelsea to a damaging draw in the Premier League on New Year's Day.
Chelsea took the lead out of the blue when Christian Pulisic's cross deflected onto the crossbar via a touch from Willy Boly and dropped invitingly for Raheem Sterling to blast home. Brennan Johnson spurned two good chances to equalise and Morgan Gibbs-White struck the underside of the crossbar before Forest made it 1-1.
The visitors failed to clear a corner and Boly nodded down for Aurier, who showed great composure to control the ball and hit a volley through Kepa Arrizabalaga's legs. Graham Potter brought on Pierre-Emerick Aubameyang, Hakim Ziyech and Conor Gallagher, but the substitutes could not turn the tide.