[Sergio] Ramos, [Iker] Casillas and Xabi Alonso will try to retain the title with Spain, whilst another six national sides have Madrid players in their squads.
[Luka] Modric (Croatia), [Karim] Benzema and [Raphael] Varane (France), Marcelo (Brazil), [Angel] Di María (Argentina), [Fabio] Coentrao, Cristiano Ronaldo and Pepe (Portugal) in addition to [Sami] Khedira (Germany), are the players that have been selected to go.
A total of seven different countries incorporate Madrid players, and it would be a huge surprise if the majority of them did not advance to the quarterfinal stage of the tournament.
For now, though, each Madrid player will only be concerned with getting out of the group stage.
Over the following slides, which will be updated as the tournament progresses, you can track how each player is getting on in South America.
Statistics courtesy of WhoScored.