Casillas won his first Club World Cup on his 700th appearance with Real Madrid
He is the third player in the club's history to reach this milestone, following Raúl and Sanchís.
Cristiano Ronaldo won the tournament's silver ball award.
Watch how the Whites' goalkeepers go through their paces at the facilities of the Grand Stade de Marrakech.
The reserves player has reached the figure following 63 matches with the Whites.
The Whites will play the first leg in the Vicente Calderón at 9pm CET on 7 January.