Liverpool defender Virgil van Dijk has admitted that he has no idea why his side are underperforming this season.
The Reds have seen a massive drop-off in form this campaign compared to the side that pushed on all fronts last season.
Jurgen Klopp's side host Manchester City - who pipped them to the title last season by one point - on Sunday, and the Reds could be as far back as 17 points off the top of the table if results go against them this weekend.
Speaking to Sky Sports, the Dutchman said: 'It's difficult to find a direct reason for it.