ALFRED N'DIAYE'S first-half effort stunned Liverpool and consigned Jurgen Klopp's Reds to yet another horrendous loss in 2017.
N'Diaye gave the Tigers a 1-0 lead in the dying minutes of the first half as he scrambled home form close range following a corner.
Liverpool have only won once all year - in the FA Cup replay against lowly Plymouth - and were once again left frustrated.
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With the Reds pressing and dominating with over 80 per cent of possession in the second half, it was Marco Silva's Hull who scored second, with Oumar Niasse doubling their tally.
If they weren't already, Liverpool's hopes of a first ever Premier League title were left in tatters.
STATS, FACTS, GOALS & LOLS
HULL captain Michael Dawson got injured in the warm-up meaning deadline-day signing Andrea Ranocchia came in for an instant debut.
THE Italian’s introduction meant the Tigers had FIVE January signings in their starting line-up - and they all impressed.
SADIO MANE was back in Liverpool’s team – his first start since the African Nations Cup. And he was given a nice welcome by Hull’s Harry Maguire, who wiped him out early on in the first half.
THE Tigers fans were unsure about the appointment of Marco Silva when he first replaced Mike Phelan. But they love him now, singing his name to the tune of Glad All Over.
ALFRED N'DIAYE was bang average when he last played in the Premier League for Sunderland four years ago. But he grabbed a goal on his debut for Hull.
N'DIAYE'S opener came after another blunder from his ex-Black Cats tea-mate Simon Mignolet, who failed to gather Harry Maguire’s header under pressure from Abel Hernandez.
LIVERPOOL have amazingly now lost at Hull three times in a row.
THE Reds are also now winless in their opening five top-flight matches of a calendar year for the first time since 1954.
THIS was the first time the Tigers have kept a clean sheet at home in the league this season – the last top-flight team to register one.
THEY know look like they have a real chance of staying up, having picked up seven points from four Prem games under Silva – four more than Phelan got in his last nine matches.
BIG PICTURE
Next five fixtures
HULL
Feb 11 - Arsenal (A) - PL
Feb 25 - Burnley (H) - PL
Mar 4 - Leicester (A) - PL
Mar 11 - Swansea (H) - PL
Mar 18 - Everton (A) - PL LIVERPOOL
Feb 11 - Tottenham (H) - PL
Feb 27 - Leicester (A) - PL
Mar 4 - Arsenal (H) - PL
Mar 12 - Burnley (H) - PL
Mar 19 - Man City (A) - PL
Subs not used: Karius, Gomez, Alexander-Arnold, Wijnaldum.
Booked: Milner.
STAR MAN: ANDREA RANOCCHIA (Hull)
SOCIAL SAYS
WHAT THEY SAID
Liverpool manager Jurgen Klopp: "At this moment obviously that was not enough. The first half for sure was not enough. We gave both goals away easily, the overall performance was not like it should be. We need to wake up, that was not acceptable.
"We had a lot of possession, but what is possession? Possession is only good if you create something. It was not like we expected from ourselves. We have to take the criticism, think about it, find a few answers and react."