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#3 Ryan Giggs | Manchester United legend
Ryan Giggs is another Red Devil star to make this list. Chelsea will have little love lost for Manchester United.
Giggs makes this list for two important reasons: his 50 appearances against the Blues and his 15 assists against them as well. The sheer volume of games where Chelsea had to deal with Giggs was rather astounding. In fact, the only other team Giggs managed 50 appearances against was Arsenal.
His 15 assists against the Blues is also a record, with no other player coming close to making as many assists against them.
Andy Cole and Alan Shearer both come in a distant second with just six assists apiece, not enough to reach Giggs' record even when their tallies are combined. Another notable factor the Chelsea faithful won't be pleased about is the number of games they lost against Giggs: 22 losses in 50 games. If someone tormented Chelsea over the years, Giggs was certainly one of them.
#2 Carlos Tevez | Former Premier League striker
The Argentine legend may now be retired, but he will forever be remembered as one of the players who excelled for both Manchester City and Manchester United.
A vibrant and agile attacker, thanks to his height, Tevez took the Premier League by storm throughout his stint in England. While he was renowned for his goalscoring, Chelsea fans won't have fond memories of Tevez at Stamford Bridge.
The only team after Chelsea that Tevez has scored more goals against is Blackburn - nine goals in nine games. The Blues, though, felt the brunt of the Argentine's attacking talent.
In just 12 games against them, Tevez managed eight goals. Whenever the Argentine clashed with the Blues in a knockout event, Chelsea always lost, which was frustrating for the Chelsea faithful.
#1 Sergio Aguero | Manchester City legend
Having beat Chelsea 12 times in the 23 games he played against them, Sergio Aguero is clearly one of Chelsea's biggest ever tormentors.
It's also little surprise that Aguero has scored more goals against Chelsea than against any other team he has played throughout his career. His tally of 15 goals in 23 appearances against the Blues show the Argentine's quality.
There are many games where Aguero tormented the Blues, but some of them stand out.
A brace from the Argentine legend helped Manchester City win the Community Shield in 2018 against Chelsea. In 2019, Aguero produced a hat-trick as City trounced the Blues 6-0.
Another hat-trick came in 2016, where City snatched all three points against Chelsea at Stamford Bridge. Aguero was ruthless in front of goal, and it would be impossible for Chelsea faithful to forget his exploits against them.
