Jurgen Klopp is a much better manager than he was a player, that's for sure.
The German had a decent career, spending 11 years and making 340 appearances for Mainz 05 in the 2. Bundesliga.
He would then manage the club and led them back to the Bundesliga in 2004.
Klopp then established himself as one of the world's best managers with Borussia Dortmund.
He helped them to back-to-back Bundesliga titles and also a Champions League final berth.
Now 52 years old, Klopp has won the Champions League trophy with Liverpool and is on the brink of winning the Premier League title.
During his time with Dortmund and Liverpool, Klopp has managed a whole host of world-class players.
But who would make it into his ultimate XI? WhoScored.com have looked at the statistics and named the best XI he's ever managed.
Stats taken are from league games only. Players must have played at least a season's worth of games to be included.
GK: Alisson Becker - 6.78
Klopp decided to make Alisson the world's most expensive 'keeper when he signed him for £67m in 2018. It proved to be an inspired decision.
The Brazilian goalkeeper has kept 31 clean sheets in 58 Premier League games and he's saved 79% of shots in that time.
RB: Trent Alexander-Arnold - 7.17
Łukasz Piszczek was good under Klopp, but he's not in the same league as Alexander-Arnold.
Klopp gave the English youngster his debut in 2016 and he's recorded 25 Premier League assists since then.
CB: Virgil van Dijk - 7.41
Van Dijk has emerged into the best centre-back in the world under Klopp.
His signing was responsible for Liverpool's transformation in defence and he narrowly missed out on the Ballon d'Or last year.
CB: Mats Hummels - 7.47
Hummels and Nevan Subotic formed a fearsome partnership at the back for Dortmund at the start of last decade.
The German defender actually has a better average rating than Van Dijk under Klopp, which may surprise some.
LB: Andy Robertson - 7.09
The Scottish defender is arguably the best signing Klopp has made in his career.
Signed for just £8m in 2017, Robertson has gone on to become one of the best left-backs in the world.
CDM: Nuri Sahin - 7.56
Some Liverpool fans may be surprised by seeing Sahin's name on the list. The Turkish midfielder failed at Merseyside but he was brilliant under Klopp at Dortmund.
Sahin keeps the likes of Jordan Henderson and Gini Wijnaldum out of the side.
RM: Mohamed Salah - 7.58
Salah was not Klopp's first choice target but he would be ecstatic at how things turned out.
The Egyptian has scored a ridiculous 70 goals and 24 assists in his opening 100 Premier League games.
CAM: Mario Gotze - 7.53
Unfortunately, Gotze isn't the same player any more after being diagnosed with a metabolic disorder in 2017.
But he was one of the best youngsters in the world under Klopp and underlined his talent by scoring the winner for Germany in the 2014 World Cup final.
CAM: Philippe Coutinho - 7.63
Coutinho had a direct hand in 43 goals during his 64 Premier League matches under Klopp.
The Brazilian burned bridges with Liverpool fans after forcing through a £105m move to Barcelona in 2018, but there's no doubting how good he was for the club.
LM: Marco Reus - 7.71
Having joined in 2012, Reus went on to contribute to 64 goals in 82 games under Klopp.
Now 30 years old, the German remains at Dortmund and is still one of the most talented players in the Bundelsiga.
ST: Robert Lewandowski - 7.51
What a player.
Lewandowski was a big reason for Dortmund's success under Klopp, scoring 74 times in four seasons.
Not a bad side. There are a few notable omissions, though.
Sadio Mane is one of the best players in the world now but misses out on a place in the side to Reus.
Lewandowski makes it in front of Roberto Firmino, while Ilkay Gundogan, Henderson and Wijnaldum also miss out.