Quality of Defense (least xGA) for the best performing teams in top 4 leagues (La Liga, EPL, Serie A and Bundesliga).
All 78 teams considered, but focus here is on best performing 4 teams in each league.

RTs appreciated. Seriously RT though.

La Liga:
1. Atletico Madrid: 0.845 xGA per game

2. Real Madrid: 0.94 xGA per game

3. Barcelona: 1.02 xGA per game

4. Sevilla: 1.03 xGA pg

Serie A:

1. Inter Milan: 1.04 xGA per game
2. Juventus: 1.042 xGA per game
3. Atalanta: 1.09 xGA per game
4. Lazio: 1.21 xGA pg

EPL:

1. Liverpool: 0.99 xGA per game

2. ManCity: 0.995 xGA per game

3. ManUtd: 1.054 xGA per game

4. Chelsea: 1.07 xGA pg

Bundesliga:

1. RB Leipzig: 1.10 xGA per game
2. Wolfsburg: 1.13 xGA pg
3. Bayern : 1.17 xGA pg
4. Dortmund: 1.28 xGA pg

Ranking all these teams based on least xGA, we get-

1. Atlético: 0.85 xGA per game
2. Real : 0.94
3. LFC : 0.99
4. ManCity: 0.995
5. Barca : 1.02
6. Sevilla: 1.03
7. Inter: 1.04
8. Juve: 1.042
9. ManUtd: 1.05
10.Chelsea: 1.07

Rankings contd..

11*. Atalanta: 1.09 xGA per game
12*. RB Leipzig: 1.10
13*. Wolfsburg: 1.13
14*. Bayern: 1.174
15*. Lazio: 1.21
16*. Dortmund: 1.28

Conclusion, Atlético Madrid, Real and Liverpool have the top 3 defenses in the world (based on expected goals against this season).

Ramos, Varane, Gimenez, Van Dijk, Gomez, Pique, Reguilón, de Vrij, Maguire, Upamecano etc have been some of the best CBs in the world this season.

Defenses of teams like Atalanta, Chelsea, Sevilla, Leipzig are not discussed enough/ rated enough.
Chelsea midfielders like Kovacic, Kante, Jorginho are disciplined and do a good job in defending their CBs.

For Atalanta, De Roon has been a revelation. He may not be offensively good, but he drops deep n builds up attack from deep. He possesses elite positioning abilities which helps in disrupting the opposition's counter-attacks. Has a good tackle too.

@UTDFuture @TheFergusonCode @DeveshUTD