"Thank you all for your messages!!! Thank God it's not serious!!! I'll be back soon!!! I'm very pleased with the victory!!!" Marcelo posted on his Twitter account.

The five-time World Cup champions beat Serbia 2-0 in their last group-stage match at Moscow's Spartak Stadium and advanced to the round of 16 on Wednesday. Marcelo was substituted in the 10th minute.

Brazil will face Group F runners-up Mexico in the round of 16 match at the Samara Arena on Monday.