#4 De Gea vs Courtois
Of course, the two goalkeepers will not be facing each other directly tonight - unless it comes down to a penalty shoot-out - but the battle between the posts could make the difference at Wembley.
In what is likely to be a close and low-scoring affair, both keepers will have to be on the top of their game, as one goal could be enough to take the spoils in London.
While de Gea has crowned a fantastic season with the Red Devils by winning the Golden Glove, keeping 18 clean sheets in 37 matches, Courtois has been inconsistent in a season to forget for Conte's Blues.
Should either of these men slip up during the final, it could spell the end to their team's hopes of hoisting the FA Cup. Therefore, the battle of the goalkeepers could be essential to the outcome of the match.