We've already ranked Real Madrid's forwards and midfielders from worst to best.
Let's now talk about the defenders.
Very poor
Jesus Vallejo
The 25-year-old had a decent spell after Real Madrid secured the La Liga glory last season, but it is still enough for him to be considered quality material. Vallejo remains an error-prone player who is unlikely to get a first-team chance this term.
Alvaro Odriozola
The wing-back joined the Whites as a top talent but he is way too far from fulfilling it. No wonder Real Madrid consider offloading him this summer.
Average
Lucas Vazquez
The 31-year-old knows how to impress on a particular day but he still remains among Real Madrid's weakest points in defence. Vazquez's poor positioning and physical ability have often been a problem.
Good
Ferland Mendy
The left-back hasn't been as important under Carlo Ancelotti as under Zinedine Zidane, yet he is a great player who deserves a starting spot at Real Madrid for his defensive and attacking contribution.
Nacho
The Whites' veteran remains a player Ancelotti could rely on whenever he wants. Nacho's versatility - he could occupy every defensive area if needed - is his big advantage. And yeah, he's a real fighter.
Dani Carvajal
The right-back would be in the 'very good' category if not for his recurring injuries. If Carvajal regains his Champions League final form this season, he will be one of Real Madrid's key players.
Very good
Antonio Rudiger
In the German we've got a true professional who seems to perfectly suit Ancelotti's system of play – even while playing as a left-back. He's here to claim his place in the starting eleven.
Eder Militao
There are times when the Brazilian is inconsistent, yet his potential is still immense and he proves it every now and then. We can't imagine the 24-year-old outside the starting eleven anytime soon.
World class
David Alaba
The Austrian has been a perfect fit for Ancelotti's side since the first day he arrived at the Bernabeu. Alaba's leadership qualities and versatility make him a standout player in European football.