The Reds entered the fixture coming off the back of a 6-1 midweek win over Southampton, quite the contrast from Newcastle who were thrashed 5-1 at Crystal Palace last weekend.
A betting man would have backed the visitors, and probably by a couple of goals too.
Yet the Premier League has proven to be far from predictable this season and Newcastle United were deserving of their three points as they defended well and worked the visitors on the counter.
Co-commentating for BBC Radio Five Live, Steve Stone felt the Reds approached the game in a slack way and made the point how their performance was a result of overconfidence.
"Liverpool look they thought they had to turn up and they would win. That doesn't happen in the Premier League,” the former midfielder explained.
Jurgen Klopp certainly made no excuses in his post-match interviews, while a former player of both sides Dietmar Hamann felt Newcastle’s decision to drop deep is what prompted their success.
Liverpool struggling to break teams down who sit deep. Coutinho badly missed. Newcastle deserved winners. Great team effort by the Toon Army— Didi Hamann (@DietmarHamann) diciembre 6, 2015
Liverpool’s biggest victories under Klopp’s guidance have come against Chelsea, Manchester City and Southampton – three teams who were willing to attack and left themselves open to the counter.
Newcastle approached the game as if they were the away team, drawing Klopp’s side on to them and taking advantage of the space left in behind fullbacks Alberto Moreno and Nathaniel Clyne.
It was a tactical battle, and credit must go to Newcastle boss Steve McClaren for identifying Liverpool’s weakness and hurting them through the brilliant Georginio Wijnaldum.
The Dutch star now has seven league goals for the season, all of them coming at St. James’ Park.