Chelsea boss Antonio Conte admitted that his side “suffered” but knew that he had to change the system as they drew 3-3 with Roma at Stamford Bridge.
The hosts went 2-0 ahead as David Luiz and Eden Hazard scored, but a goal from Aleksandar Kolorov pulled one back for the visitors before the break.
Edin Dzeko then scored twice to put the Serie A side ahead before Hazard struck again before the end to keep Chelsea top of Group C.
Despite an strong start to the game, Conte was disappointed at Chelsea’s ability to keep hold of the ball.
“I think we suffered with possession, it wasn’t easy in the first half despite (the fact) we scored two goals,” he said. “The change of the system, it wasn’t good but when you are in a difficult situation you have to change sometimes, to improvise.
The former Italy boss made changes to the system at the break, but the Blues conceded twice in the second half.
“I think in the second half we changed, we came back to 3-4-2-1 and the situation changed.” Conte said.
Luiz, employed in midfield in the absence of N’Golo Kante, was replaced early in the second half.
“(He has) a little problem in his calf,” Conte said. “In this moment, I can’t risk my players, because we are playing always the same players so it’s very difficult now to risk someone and to lose him for many times.”