Didier Drogba reflected on a 'special' game against his former team-mates but was left to rue a missed second-half opportunity to pull the hosts level.
The former Blues striker led the line for Mancini's side and threatened when his header flashed across goal and was volleyed against the post by Selcuk Inan.
The Ivory Coast international said: "It was a special game, to play against my old team-mates.
"I didn't get a lot of chances but the header was perfect - well, not perfect because I didn't score, but it was a great cross, I wish I could have scored this one but there is another game.
"It was a great game and I think it is a good result.
"Chelsea are the better team on paper but second half we showed we can create them some problems. Now we have to go out and do it at Stamford Bridge.
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"They played on the counter-attack and we were a bit naive two or three times. We know they are dangerous, we have to work on that and solve these problems.
"If we manage to score a goal there, it's a different game. One-one is a good result."
