The 2015–16 season saw McCall take his team to even higher heights by successfully completing the double. Saracens successfully retaining the Aviva Premiership trophy by defeating Exeter 28-20 while defeating Racing 92 in the second final of the European Champions Cup. McCall's rotation strategy proved particularly successful, enabling Saracens to win all 9 games in the Cup - a first in European rugby. While McCall has been significantly quieter in the media than his predecessor, he openly challenged the timing of an England training session shortly before the ECC began which led to multiple player injuries.