Liverpool faced another difficult challenge in their bid to become Premier League champions against Arsenal this weekend.
The Reds have already faced some of the league's biggest teams this season, putting Tottenham to the sword at Wembley and securing draws with Chelsea and Manchester City.
And there was certainly a feeling that Liverpool could leave the Emirates Stadium with an impressive result and that their much improved defence could contain Arsenal's frontline.
As expected, the game quickly became a slugfest with both attacks creating brilliant chances and Sadio Mane was unlucky to have a perfectly legal goal ruled out for offside.
The first-half was about as entertaining as a 0-0 fixture can possibly get, but it wasn't until the 61st minute that the deadlock was finally broken.
Fabinho starts vs Arsenal
James Milner delivered a superb right-footed finish to fire Liverpool into the lead after some questionable goalkeeping from Bernd Leno.
However, it was one of the Englishman's midfield partners who was attracting attention from Liverpool fans on Twitter and it wasn't for positive reasons.
The player in question is none other than Fabinho, who has struggled for game-time since moving to Anfield and had a big opportunity to impress in north London.
Liverpool fans react on Twitter
Nevertheless, Liverpool fans weren't too pleased with his performance and even considered him the weak-link in an otherwise solid display from the Reds.
In particular, supporters were concerned that Fabinho was far too slow on the ball and believed it costed them in midfield against such a energetic team as Arsenal.
It's certainly an interesting point and you can check out the finest tweets below:
It looks like Klopp was right after all and Fabinho really is still adjusting.
There's no doubt that Fabinho has the quality to succeed on Anfield, but he needs to raise his tempo to be a success in the high octane fixtures of the Premier League.
Whether or not Fabinho will get the game-time he needs in order to adapt is another question, though, and competition is fierce in the Liverpool midfield.
Based on his Arsenal performance alone, players like Georginio Wijnaldum and Naby Keita will be feeling confident about making the team going forward.
Fans will just have to hope that Fabinho takes the game as a valuable lesson and follows in the footsteps of Andrew Robertson by coming good in the winter months.
He'll just have to make sure his progression is quicker than his distribution of the ball.
Do you think Fabinho will come good at Liverpool? Have your say in the comments section below.