#3 Andrew Robertson (Liverpool)
Andrew Robertson is the other half of Liverpool's formidable full-back partnership who powered the English club to their first league title in three decades this summer.
Arguably one of the best left-backs in the game at the moment, the 26-year-old's tireless runs down the flanks and inch-perfect crosses for colleagues up front have made him an integral part of Jurgen Klopp's English champions.
After producing 12 assists last season, the most in the Premier League by a defender after Trent Alexander-Arnold, Robertson has been one of the star performers in an otherwise inconsistent title defence by the Anfield club.
#2 Virgil Van Dijk (Liverpool)
Virgil Van Dijk is widely regarded as one of the best centre-backs in the game at the moment.
The Dutchman didn't miss a league game for Liverpool in the last two seasons, such is his importance to his club team. Unsuprisingly, Van Dijk's exploits in the heart of the Liverpool defence and his calm and assured presence at both ends of the pitch have played a key role in the club's recent successes.
Despite suffering a long-term injury this campaign that effectively rules him out for the rest of the season, Van Dijk remains a key player for club and country and is one of the shining jewels in Jurgen Klopp's star-studded outfit.
#1 Sergio Ramos (Real Madrid)
Real Madrid captain Sergio Ramos is one of the finest goal-scoring defenders in the world at the moment. Despite approaching his 35th birthday, Ramos has been a standout performer for the reigning La Liga champions at both ends of the pitch.
After helping Real Madrid to the title last season, the veteran defender scored his 100th goal in all competitions for the club, becoming only the second defender in Real Madrid's history to do so.
Ramos' chequered disciplinary record seems to be a thing of the past, as the Real Madrid centre-back has been a defensive bulwark for his side in recent times. In his absence, the reigning La Liga winners appear uncharacteristically sloppy at the back, which goes on to prove Ramos' importance in Zinedine Zidane's setup.