Centre-back: Eder Militao (Real Madrid)
Eder Militao has grown by leaps and bounds in the last few years, and is now indispensable to Real Madrid's backline.
The Brazilian is averaging 3.8 clearances per game this season. That is a testament to his game-reading acumen. He is also strong in the air, making 2.4 aerial duels per outing.
Centre-back: Felipe (Atletico Madrid)
Felipe has settled into life well at Atletico Madrid, establishing himself as a solid member of their backline, thanks to his assured performances.
He's had his fair share of injuries this season. However, the Brazilian has looked spectacular whenever he has been on the field. He has also contributed two goals this campaign.
Centre-back: David Alaba (Real Madrid)
What a fine addition David Alaba has been to Real Madrid's squad! The Austrian arrived on a free transfer from Bayern Munich in the summer.
He's rock-solid, a leader in defence and brings a wealth of experience. Alaba has also shown excellent attacking intent on occasion, contributing four goals.