crumbled as Roma moved to the top of Champions League Group C with a 3-0 victory at Stadio Olimpico on Tuesday night.
Stephan El Shaarawy scored after 38 seconds and pounced on an Antonio Rudiger error to make it 2-0 after 36 minutes.
Diego Perotti struck a fine third after 63 minutes and there would be no Chelsea comeback this time as Roma moved on to eight points, one more than the Blues.
A win in Antonio Conte's first match in Italy as Blues boss would have seen Chelsea advance to the knockout stages.