Jan Oblak, GK: 7.5
Kept 24 clean sheets in La Liga, 32 total. Oblak conceded 18 goals in 38 games, an average of 0.47 per game, which tied the Liga record. In just his second season at Atlético Madrid, the Slovene shot stopper emerged as Europe's top young goalkeeper, also passing stern tests against Barcelona and Bayern Munich in the Champions League. We'll forgive him for his shootout slip ups against PSV Eindhoven and Real Madrid; Oblak had a breakout season and it's scary to consider how much better the 23-year-old can get still.
Miguel Ángel Moyà, GK: 5
Limited to four Copa del Rey appearances after playing nearly 3,000 minutes in 2014-15. The last we saw of the 32-year-old was in arguably Atlético's worst performance of the season: the home quarterfinal loss (2-3) to Celta Vigo in January.
Juanfran, RB: 7.5
La Liga's top right back and one of the finest on the continent. The 31-year-old's supremely well-rounded game remains crucial to Atleti; he's been one of Diego Simeone's stalwarts since the Argentine returned to the club. He even scored a goal this season, a nifty back-post finish in a 5-1 home win vs. Real Betis. Juanfran's season ended on a sour note as he struck the upright in the Champions League final penalty shootout, but he remains loved and admired by colchoneros the world over for his commitment and his passion. And he's a damn good footballer, too.
Jesús Gámez, RB: 5.5
A loyal squad player and decent defensive fullback since his move from Málaga two years ago. However, Atleti could stand for an upgrade to second-choice right back, and the 31-year-old will be sacrificed to make that move happen.
Diego Godín, CB: 8
Perhaps the pharaoh's best season yet. Now firmly ensconced as Europe's top center back, the 30-year-old is in his prime, but this season wasn't nearly as much about his play (which was sterling) as it was his commanding presence as the back four's very own Simeone. José Giménez, Lucas Hernández and Stefan Savic all took big leaps this season playing next to the Uruguayan and clearly learned from him as the season went on. Invaluable member of the team, a true warrior.
José Giménez, CB: 7
Still young, still raw, still a lot to learn. But at just 21 years of age, Giménez offered some really polished, even commanding performances over most of the season, even if he was unimpressive over the season's last six weeks. Joséma's going to get much better (maybe not less wild, but better) - expect him to take another step next season.
Stefan Savic, CB: 7
Solid debut season for the Montenegrin. The 25-year-old looked a bit shaky after his arrival from Fiorentina but was very important when Giménez' form dipped. He came a long way, as evidenced by his starting the Champions League final. Savic's calm versatility was a nice alternative to Joséma's occasionally unbridled headless chicken act. He's a quality CB and has proven to be quite a savvy signing from Simeone.
Lucas Hernández, CB/LB: 6.5
Don't think anyone really expected Lucas to become an important member of the team at just 20 years old. Over the final six weeks or so he stepped up big-time. Guilherme Siqueira's move to Valencia opened up the second-choice left back role for Lucas, but he mostly played in the center of defense when eventually the three other center backs went down with minor injuries. His performances under immense pressure - see the second leg of the Champions League quarterfinal vs. Barça - showed once again the mettle of Simeone's players, young or old.
Nacho Monsalve, CB: N/A
Just one appearance for the 22-year-old canterano this season: the home win vs. Betis.
Filipe Luís, LB: 7.5
The 30-year-old struggled quite a bit upon his return from the West London badlands but looked like the Filipe of old by the end of 2015. The Brazilian picked up where he left off in 2013-14; a year at Chelsea did not change his standing as one of Europe's top left backs. Filipe's dangerous attacking ability melded with actual positional sense fixed the 2014-15 side's biggest problem.
Guilherme Siqueira, LB: 4.5
Speaking of someone lacking positional sense, here's Guilherme! He stayed when he had offers to leave last summer and could have been an insanely valuable backup to Filipe. Instead, the Brazilian made five appearances (three in Champions League and one each in league and cup), was very poor and found himself banished to Valencia by the end of January.