Liverpool's clashes with West Ham can usually be used as a barometer of their progress. Two defeats in particular spelt the end of Brendan Rodgers's tenure at different spells.
Last season, the 3-1 defeat in September brought about all the warning signs to suggest that the Reds were not going to build on the title challenge of the season before, while the humiliation at the hands of Slaven Bilic's side at Anfield this season were one of the final nails in the Ulsterman's coffin.
This weekend's clash seems to have been played down given the huge month ahead of the Reds. There is, after all, only one point that separates the two sides who could end the weekend within striking distance of the Champions League places.
But in general games against West Ham are usually a mark of if Liverpool are going in the right direction, or are enjoying a good season, visits to the Hammers usually see them come away with all three points, while defeats at the Boleyn Ground are usually a sign of a poorer season or dreadful run of form.
These are the kind of sides that Liverpool need to beat regularly if they want to be successful - defeat to West Ham has always been a warning sign of trouble - which is why it's imperative that Jurgen Klopp starts as he means to go on and chalks up a victory against a testing side.
So far the German has shown that he is a quick learner when he has come up against troublesome sides.
West Ham are more than capable of holding their own even if wins have been hard to come by for them lately.
Winning against sides of the Hammers' calibre pretty regularly shows a side progressing nicely, rather than facing any trouble.