Manchester United and Liverpool's seasons have been very different so far.
Man United are currently in a lowly sixth place, having accumulated just 26 points from their opening 16 games.
They are already 18 points behind leaders Manchester City, while they are also eight points off from the Champions League places.
In juxtaposition, Liverpool are flying high.
They've gone unbeaten in their opening 16 games, winning 13 of those.
So, Liverpool go into Sunday's derby as the favourites, but there is still so much riding on the game.
And Jose Mourinho has been playing mind games ahead of the tie.
On Saturday, an interview emerged whereby Mourinho mocked Jurgen Klopp and Liverpool for not winning any silverware in recent years.
When asked by Sky Sports if this was the best Liverpool side he had ever played against, he replied, per Manchester Evening News: "I played against a Liverpool side who was a European champion.
"And I don’t know if this one is better or not I know the another one was European champion and this one won nothing. So I think I have to respect the ones that did it."
And he's now launched another attack on Liverpool, describing them as 'the lucky ones'.
"I think they are, of course, very confident about themselves," Mourinho said, per the Daily Mail.
"They are top of the league, they have this feeling of the 'lucky ones' where everything goes in your direction.
"They know how they beat Everton, they know that the opening goal in their last league match was offside (against Bournemouth) and they know against Napoli they could be out of the Champions League in the last seconds."
This surely isn't going to go down too well with Liverpool.
Mourinho is also not expecting any complacency from Liverpool during the tie.
"I think they are not stupid," he added. "They also know the match they have is difficult.
"They know we have our weaknesses, our strengths, and I think they will respect our strengths. If they don't, I will be happy.
"They know they need every point if they want to be champions.
"I think they are professionals and being professionals is respecting Manchester United. They know that we can go there and win."