Petr Cech accepts Chelsea's well-oiled "machine" took just too long to recover in their bid to snatch the title away from Manchester United.

The Blues saw their mini-revival end in a 2-1 defeat at Old Trafford last weekend, which left Sir Alex Ferguson's men needing only a point from their last two matches to secure a record 19th championship.

Carlo Ancelotti - who won the Double in his debut campaign - is facing growing speculation he will be replaced in the summer.

Chelsea had started the 2010/2011 campaign in blistering fashion, winning their first five Premier League games, conceding just once before defeat at Manchester City.

However, a poor run around the turn of the year with just 10 points from 11 matches saw them drop out of the top four. It was a deficit which despite their recent eight wins from nine before losing at Old Trafford proved too much to overcome.

Cech said: "In December and January, we dropped so many points, and gave advantage to the others, especially Manchester United.

"We had a great last two months and managed to come back, and it was a pity we could not win the game at Old Trafford.

"If you look at the season as a whole, they were more consistent, which is why they have the title."

Cech added on BBC Sport: "It is always difficult to find the reasons because you have to analyse it deeply.

"Sometimes in football, things happen and you can't do much about it - the machine was stuck and unfortunately it took us a bit longer than we wanted to make it run again."

Chelsea skipper John Terry has spoken publicly in defence of the under-fire Blues manager, who spent £75million on Fernando Torres and David Luiz in January, but could not find the magic touch for a second season.

Cech - signed for £7million from Rennes in June 2004 and who has seen Jose Mourinho, Guus Hiddink, Felipe Scolari and Avram Grant all come and go - accepts the demand for success can be brutal.

"We had a great season last season, and an interesting one this season, but we have no trophies which is disappointing for everybody," he said.

"This is, though, a decision for the club to make and we will see what comes out."

Cech added: "It is difficult because when you are at a big club with a lot of expectations you want to constantly win things.

"Sometimes it is a hard job to do, but sometimes this is the way it is in football.

"As a player, you try your best to make things happen and the rest is up to the others."