#2 Real Madrid lacking chemistry
Perhaps a byproduct of the disciplined performance, but Real Madrid lacked a certain verve going forward.
We've seen the likes of Gareth Bale, Vinicius Jr, Luka Modric, and Isco light up the attack for Real Madrid with some great skill in the past, but Los Blancos' primary weapon was their quick interplay in the final third. The display against Sevilla lacked that interplay for the most part.
Only on two occasions did Madrid successfully pull off a good team move in attack; the first ended in Carvajal taking a shot at goal and the other culminated in Benzema's goal.
Not to ignore the plenty of good individual performances as Gareth Bale and James Rodriguez stepped up in defence as well as attack. Raphael Varane was immense at the back, Carvajal was a constant threat going forward, and Karim Benzema created and found space with his movement. The most promising thing for Real Madrid was Eden Hazard showing glimpses of his full capability. Once he's familiar with his team-mates, this Real Madrid attack could be a force to reckon with.