Eight points clear at the top of the Premier League ; what a way to mark your fourth year in charge of one of Europe’s biggest clubs.
48 months later, the Reds are in a much stronger position and are the current reigning champions of Europe.
Starsport takes a look at some of Liverpool’s best matches under the German’s guidance.
1) Liverpool 4-0 Barcelona – May 1 2019
When Ousmane Dembele missed a 96th-minute sitter with the last kick of the game in the Nou Camp, nobody really thought it would matter.
By this point, Barcelona were already 3-0 up against Liverpool in the Champions League semi-final first leg.
One week later though, Dembele would be made to rue that gilt-edged chance.
With Mohamed Salah and Roberto Firmino both ruled out through injury, it was up to Georginio Wijnaldum, Trent Alexander-Arnold and Divock Origi to take centre stage as Luis Suarez and Philippe Coutinho both struggled at their old stomping ground.
Beating Lionel Messi and his Barcelona co-stars to reach a European final? It doesn’t get much better than that.
2) Liverpool 2-0 Tottenham – June 1 2019
Spurs had also defied the odds to progress past Ajax in the previous round.
But Mauricio Pochettino’s side were swept aside by Liverpool, as Sadio Mane and Origi netted to give Klopp his first trophy since joining the club.
The result was undoubtedly huge for Liverpool but didn’t quite have the same wow factor as the previous round.
Liverpool celebrated the fantastic achievement with an open-top bus parade around the city.
3) Liverpool 1-0 Everton December 3 2018
Ok, I promise this isn’t just a list of Origi’s best moments in a Liverpool shirt.
But the Belgian was once again involved in this memorable Klopp win.
Liverpool usually dispatch of local rivals Everton with ease, especially at home.
But last year it took an Origi winner in the dying seconds to secure all three points.
As the clock ticked down, Virgil van Dijk sent the ball looping towards Jordan Pickford’s goal, before the Toffees stopper failed to tip the ball over.
After it hit the crossbar and came back out, Origi was on hand to nod home, causing rampant scenes inside Anfield as Klopp streaked onto the pitch to hug goalkeeper Alisson.
4) Liverpool 4-0 Arsenal – August 28 2017
Arsene Wenger’s final season at Arsenal saw the Gunners beaten in comfortable fashion on a number of occasions.
The north London outfit were especially awful as they went to Anfield at the end of August, as Klopp’s men ran riot in the summer sun.
The attacking trio of Firmino, Salah and Mane were all on the scoresheet as Liverpool ruthlessly put Wenger’s men to the sword.
Liverpool only managed to finish fourth that season but the Arsenal victory was a particular highlight.
5) Liverpool 3-1 Manchester United – December 16 2018
Beating your biggest rivals to go back to the top of the league and getting their manager sacked in the process? Perfect.
Liverpool needed two late Xherdan Shaqiri goals to get beyond Manchester United in December of last year.
But the eventual 3-1 scoreline proved to be the final straw for Red Devil chiefs as they got rid of Jose Mourinho two days later.
The win showed Manchester City that they had a fight on their hands for the title but unfortunately wasn’t enough to secure the league months later.