Florentino Pérez hosts members of Washington's Peña Madridista La Casa Blanca
The Whites' fans also got the chance to take photos with Zidane and the players.
They thanked the fans for their support at FedExField in Landover.
The three players trained with Castilla at Real Madrid City.
Fans who visit the stadium will now be able to see the results for themselves.
The Whites will start the Regular Season at the WiZink Center on October 3 against Fenerbahçe.
The white team was proclaimed champion in el Palau after beating Barcelona 3-1 in the playoff.
The Whites' channel will broadcast all three of the team's games.