Our big match guide for the Merseyside derby runs through the form, tactics, line-ups and analysis for Everton v Liverpool at Goodison Park.
Everton and Liverpool do battle for the 100th time in the league on Sunday, and rarely has there been so much on the line with the Reds top of the league with just ten Premier League games to go.
Not that the Toffees need any more reason to try and beat the old enemy in front of the Goodison Park faithful, but they're on worst ever losing run in the derby, suffered a heartbreaking at loss at Anfield this season and yes, of course, they can put a huge dent in their title challenge.
Here's all you need to know about the big game on Sunday
It's the start of the run in with ten games left to play, and the end of a crucial and testing week that started at Old Trafford and ends at Goodison - Liverpool's two most hostile away environments to play in.
If they can end this week of all weeks still top of the table then they'll really fancy their chances with their last big away test (on paper at least) over with.
Liverpool's title challenge does, of course, only add yet another layer of motivation for Everton to try and win this one, and to strike what could be a fatal blow for their near neighbours' chances of ending their long title drought.
There's also the fact that Liverpool currently sit a whopping 33 points above Everton - which as good as Jurgen Klopp's side have been this season is still unacceptable for Toffees fans given the investment that's gone into the squad in recent years.
Klopp is fully aware of just how desperate Everton are to beat his side this time around, and will be making his players keenly aware of the situation on Sunday.
"Of course the fans of Everton don't want us to win anything, and our fans are the same with them. It's only very emotional, very passionate and for me that's how football should be," said Klopp.
"We know it will be really tough. At Goodison they really support their team, so now let's go there and use that atmosphere. It will be loud, it will be wild, it will be everything, and we have to deliver that on the pitch as well."
Brazilian forward Roberto Firmino is the main injury concern for Liverpool, with his recovery from an ankle injury promising but Klopp will want to know he's 100 per cent before starting him in this one.
Given how Divock Origi played against Watford he should get the nod again if Firmino can't go - and the presence of the Belgian will given Everton and Jordan Pickford in particular uncomfortable flashbacks.
Everton boss Marco Silva has an almost full squad to choose from, with centre-back Kurt Zouma available again having sat out the 3-0 win at Cardiff on Tuesday with a one-match suspension.
Full-back Leighton Baines is the only injured player, ruled out with a back problem.
Everton probable XI: Pickford, Coleman, Keane, Zouma, Digne, Gueye, Schneiderlin, Walcott, Sigurdsson, Richarlison, Calvert-Lewin.
Zouma should come back in but otherwise SIlva will keep the same side that beat Cardiff, with Schneiderlin getting the nod in midfield ahead of Gomes, who was excellent at Anfield, but doesn't quite offer the same protection.
Silva will try and play a bit more like Man Utd and less like his old side Watford, not pressing too far forward and not leaving an space either in behind or in those spaces between defensive line and midfield. They've got plenty of pace to play on the break and getting the ball at the feet of Sigurdsson as often as possible will be a priority.
Liverpool probable XI: Alisson, Alexander-Arnold, Van Dijk, Matip, Robertson, Wijnaldum, Fabinho, Henderson, Salah, Firmino, Mane.
Firmino is the big question mark and even if fit Klopp must be tempted to deploy Origi and give Mane another run out down the middle where he looked so dangerous against an albeit welcoming Watford defence. Mane's extra pace running in behind also gave a bit more space for Mo Salah to exploit, and he was also excellent on Wednesday.
Skipper Henderson should step in for Milner with Fabinho and Wijnaldum now Klopp's mainstays in the middle of the park, especially in the big games. Keita, Sturridge and Shaqiri will be the more attacking options from the bench.
Key battles: Trent Alexander-Arnold's display against Watford highlighted that Liverpool are at their best with two attacking full backs flying down each wing, but Everton have a decent pair in Coleman and Digne so despite all the attacking talent on show whoever gets the better of the battle out wide could have the final say.
Alexander-Arnold's delivery was also magnificent and Everton have a weakness from set plays so that will be another key area to watch.
The team's last meeting at Anfield in December saw Divock Origi score a winner deep into added time, after a calamitous error from Jordan Pickford cost Everton a point.
The goal prompted Klopp to run 40 yards on to the pitch to embrace goalkeeper Alisson Becker - a celebration that earned the Reds boss an £8,000 fine and is a mistake he has no intention of repeating.
"The (last) game was special. We know my celebration, I will not do it again," Klopp said. "(Everyone thought) the ball was out, Virg (Virgil Van Dijk) had already turned after his wonderful volley, and Div scored!
"It was tough that day, and it will be tough on Sunday."
Liverpool may be going for the title, but Everton boss Marco Silva is also under pressure after a largely unimpressive season given the squad investment. A win over Cardiff was a start but he needs a strong finish to justify his position as manager.
Make no mistake that the last game at Anfield really hurt him - and seemed to take the wind out of his team's sails. He's desperate to get revenge on Liverpool this time around.
"It is a special game for both, for the city also, for our fans a special match, for their fans also a special match," said Silva.
"I didn't see a big difference. I managed my first Merseyside derby last December and what I felt was a special match for both teams.
"They celebrated that lucky goal - that lucky moment they had in the last seconds of the match - (like it) was the final of a World Cup for us and for them."