Real Madrid say forward Lucas Vazquez and midfielder Mateo Kovacic will be sidelined for an undetermined period because of injuries.
Real Madrid ratings: For the second time in three years, Madrid are world champions. But this latest triumph was not easy by any means.
Ronaldo gets hat trick as Madrid win 4-2 after extra time, with their Japanese opponents having led 2-1 thanks to midfielder Gaku Shibasaki's brace.
Cristiano Ronaldo added the Club World Cup to the Ballon d'Or, Champions League and European Championship to cap an incredible 2016 for the Real star.
Colombian team had been due to play Chapecoense in the Copa Sudamericana final but plane carrying the Brazilian team crashed on Nov. 28.
Cristiano Ronaldo scored a hat trick as Real Madrid came from behind to beat Kashima Antlers 4-2 after extra time and win the Club World Cup.