Tottenham have won just once at Stamford Bridge since 1990. It is a miserable record, and one Chelsea fans want to continue.
But why does beating Spurs mean so much to so many Chelsea fans? It is a rivalry that dates back more than a century - and includes two relegations and a cup final.
The rivalry's origins date back to 1910, when Tottenham relegated Chelsea from the First Division by beating them on the season's final day.
It was cemented when they met in the first all-London FA Cup final, in front of 100,000 fans at Wembley in 1967.
Author Mark Meehan, who has written books about Chelsea, says: "It's a fan-driven rivalry going back generations and needle has built between fans, rather than being based on geography, like Arsenal versus Spurs."
He added: "It goes back as far as 1910 when Spurs relegated us. The rivalry escalated in the 1967 final because two former Chelsea players, Jimmy Greaves and Terry Venables, helped Tottenham win the cup.
"However, it intensified in 1975 when Eddie McCreadie, who had played for the club in the 1960s and early 1970s, was put in charge. He wanted to show he was as brave off the pitch as on it. He gave the captaincy to a young Ray Wilkins. But sadly, it all ended in relegation, with Spurs playing their part again.
"On the day of fan violence, Spurs won 2-0 a week before the end of the season, and Chelsea would be relegated again. It intensified the rivalry between supporters.
"In more recent times, Chelsea began getting the better of the rivalry to the point I got credited with calling their stadium 'Three Point Lane' in the Chelsea Independent fanzine, though I must admit I don't remember ever doing that."
That folklore explains why, when the iconic Liquidator walk-on music plays at Stamford Bridge before home games, there are chants of "we hate Tottenham" - regardless of whether they are the opposition.