Real Madrid are sweating over the fitness of Crisitano Ronaldo after he injured his ankle in a Champions League match on Wednesday.

Ronaldo scored a brace against Marseille to extend his goalscoring record for Real to nine goals in all competitions.

According to realmadrid.com, the Portuguese forward is suffering from "traumatic arthritis and a Grade I sprain on his right ankle".

The club is not decided whether to risk Ronaldo for Sunday's clash against in-form Sevilla.

Manuel Pellegrin is set to give the world's most expensive player a late fitness test as Real look to defend their 100% record.