Brazilian midfielder Willian reportedly left his team's training session Saturday with an apparent back injury suffered as the result of a rough challenge by teammate Hernanes.
Willian was spotted leaving the pitch with a bag of ice in hand.
Willian hasn't played a significant role for Brazil at the World Cup so far, but he's been identified by many analysts as a likely replacement in Brazil's lineup for Neymar, who will miss the rest of the tournament after fracturing a vertebrae.
According to Sky Sports' Paulo Freitas, Willian's injury isn't considered serious, and team doctors say he could resume training ahead of Brazil's semifinal matchup with Germany.