#3 Cristiano Ronaldo's league form
It wouldn't be an article about Real Madrid winning El Clasico without adding Cristiano Ronaldo to the list. Love him or hate him, the Portuguese hitman turns up in these big games and he could once more be the centre of attention.
While the forward arguably went missing in Los Blancos' semi-final tie with German champions Bayern Munich, his current league form is what should truly worry Barcelona's defense.
Ronaldo has scored 20 goals in his last eleven league appearances, without any signs of stopping. It is safe to say that the Portuguese has put the poor start to the season behind him and has finally come into his own again for Zidane's team.
In addition to this, he has been rested in three of Madrid's last five league ties, meaning that he should still be fresh enough to wreak havoc in the Catalans' half. Ronaldo is destined to have a strong showing tonight, automatically increasing his team's chances of leaving Camp Nou with three points in the bag.