The rivalry between Liverpool and Chelsea may be fierce, but it's one that has developed only over the past 20 years.
Though the clubs have long had cultural differences, the true rivalry didn't begin until Rafa Benitez took over the Reds in 2004.
And it was sparked into life when Jose Mourinho was seen shushing the Liverpool fans as his Chelsea side overcame the Reds in the League Cup final in 2005.
Champions League showdowns
Just two months later, the sides would meet in the semi-finals of the Champions League with Luis Garcia’s ‘ghost goal’ settling matters after a tense 1-0 win at Anfield.
Benitez's rag-tag side had overcome an opponent 33 points ahead of them in the Premier League table and one that was splashing the cash in the transfer market.
ACCOUNTS: Liverpool's financial results compared to Man United, Barcelona and other rivals
COMMENT: Naby Keita has sent Liverpool a contract message they might not be able to ignore
“You can say the linesman’s scored. It was a goal coming from the moon or from the Anfield Road stands,” Mourinho fumed in the aftermath of the game.
But things were only going to get more heated between the two sides.
Indeed, as Liverpool prepared for the final, Chelsea were relentless in their pursuit of captain Steven Gerrard.
He even turned down a new contract offer from his boyhood club.
Gerrard’s head had been turned by the promise of league titles in London but the Reds stayed firm and blocked the move. He'd later perform a u-turn and stay put.
The sides would be drawn against each other for five consecutive seasons in the Champions League between the 2004/05 and 2008/09 seasons.
The Reds topped the group by a point when the sides were drawn together in the group stages in the 2005/06 season.
Liverpool would prevail again in the 2006/07 semi-finals in a penalty shootout win.
They met in the semi-finals again the following season, Chelsea this time coming out winners after Frank Lampard and Didier Drogba goals in extra time.
In the 2008/09 season, The Blues would win the quarter-final clash 7-5 on aggregate after a stunning 4-4 draw at Stamford Bridge.
Double heartbreak for Reds fans
Chelsea signed Fernando Torres for £50million on deadline day in 2011, leaving most Anfield faithfuls heartbroken.
Shirts were burnt and the Spaniard's love affair with the Kop was forever tainted.
Then Reds Champions League winning former manager Benitez was hired as interim Chelsea manager and it was not a popular appointment for either side.
Mourinho would then return to Stamford Bridge in 2013 and add further fuel to the fire, when his side won 2-0 at Anfield to crush Brendan Rodgers’ title hopes and he danced along the Anfield touchline in delight.
Where do Chelsea rank in the League of Love and Hate? Have your say
Rivalry restarted?
In recent years, the rivalry has been rather quiet.
A penalty shootout win for Liverpool in the 2019 Super Cup and Frank Lampard’s touchline spat with Jurgen Klopp later that year being the only real memorable moments.
Sunday could be the next significant moment in one of football's most entertaining contemporary rivalries.
Given the history, the bragging rights will be even more satisfying for the winning team and their supporters.
