Saturday 29 March, 1986 is a date that will live long in the memories of every single West Ham United supporter. That wet, muddy, Easter weekend, the Hammers went up west and turned onthe style.
The Blues' chief tormentors that day were the usual suspects - Tony Cottee, Frank McAvennie and the mercurial Alan Devonshire. All three got their names on the scoresheet as John Lyall's Boys of '86 romped to a never-to-be-forgotten 4-0 victory.
McAvennie's 68th minute goal completed the scoring and the Scot, now 49, has a fond recollection of his afternoon out at Stamford Bridge. The Glaswegian is dreaming of a repeat performance when Gianfranco Zola takes his side to face the Blues this Sunday.
"We had a white strip on and were playing in mud about a foot thick but Dev just didn't have a mark on him. His balance was unbelievable," recalled McAvennie, who was back at the Boleyn Ground for Monday night's London derby against Tottenham Hotspur.
"He was involved in everything. That was the sort of player he was. Hopefully we'll get a good result there again because they've not been doing too well at home.
"We should have won at Liverpool when Craig Bellamy hit the post. He's one of those special players who can create something out of nothing and I think he will cause John Terry problems because he's a lot quicker than John. It'll be a good day and we'd take a draw."
Strike partner Cottee, scorer of two goals that famous day 22 years ago, believes his former side can hold their own against a Chelsea side that have failed to win their last two Premier League home matches. "It'll be a tough match for the lads but all the pressure is on Chelsea," said the 43-year-old.
For those supporters too young to remember United's vintage performance, here is a brief summary. Having dominated the opening stages, West Ham United finally took the lead on 23 minutes when Devonshire netted a spectacular 30-yard strike.
The second half, which began with driving rain falling on an already heavy Stamford Bridge pitch, saw the Hammers play some vintage football. The visitors' second goal was a prime example as Geoff Pike, George Parris, Devonshire and Alan Dickens combined to hand Cottee the easiest of chances.
By midway through the second period, the game was over as Lyall's team completely over-ran their hosts. First, McAvennie sent Cottee through to slide home the third. Then, the Scot latched on to Phil Parkes' long clearance before lashing in a fourth to ensure the afternoon would go down in West Ham United folklore.