The 2010–11 season was Chelsea Football Club's 97th competitive season, 19th consecutive season in the Premier League, and 105th year in existence as a football club. They went into the Premier League as the defending champions, but failed to retain it.

The club was managed by their Double-winning manager Carlo Ancelotti, but his association with the club would be broken off, being sacked at the end of the season. Chelsea started off the season with an amazing five-consecutive-wins run in the Premier League, which was eventually halted by Manchester City when City skipper Carlos Tevez scored to lead his side into a 1–0 triumph over the defending champions. Chelsea were leading the Premier League table for almost half a season, before Manchester United overtook them when Chelsea went through a bad period during the winter saga. Altogether in the Premier League, Chelsea won 21 games, drew 8 and lost 9. They conceded the least amount of goals compared to all the other clubs in the league, sharing this with Manchester City.

In January 2011, on the last day of the transfer window, Chelsea bought Fernando Torres for a club-record-breaking and British-record-breaking fee of £50 million from Liverpool. They also bought defender David Luiz from Benfica, for €25 million plus Nemanja Matić, on the same day.

Supplier: Adidas / Sponsor: Samsung

Chelsea released all new home, away, third and goalkeeper kit for this season.

Note: Flags indicate national team as defined under FIFA eligibility rules. Players may hold more than one non-FIFA nationality.

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