Luiz Felipe Scolari says Chelsea can still reach the knockout stages of the Champions League.
Roma stunned Chelsea with three goals inside 58 minutes from Christian Panucci and Mirko Vucinic (two) to win 3-1.
Captain John Terry pulled one back for Chelsea in the 75th minute but to compound their misery the Blues had midfielder Deco sent off for a second bookable offence five minutes later.
three points
He will now miss their trip to Bordeaux and while the defeat left Group A wide open, Scolari believes Chelsea will qualify with one more victory.
"The group is open for all the teams now," admitted Scolari. "We have seven points but if we win one more game we are there.
"We need three points but the others maybe need to win two games. It is impossible for Roma and Bordeaux to do that because they have to play each other."