Neymar failed to complete 90 minutes for Brazil in their World Cup opener when he stumbled off the field late in the second half.
Neymar, the subject of nine fouls, was visibly distraught as he left the pitch and spoke to team doctors, who were applying ice to his clearly swollen ankle.
According to reports, Neymar sat on the bench in tears and did not celebrate his team’s victory, instead heading straight into the tunnel with his boot off and his swollen foot still visible.
The Paris Saint-Germain striker has just four days to recover from what local reports described as a ‘sprain’ if he is to take part in Brazil’s next group stage match against Switzerland, who beat Cameroon earlier on Thursday.
Manager Tite is also dealing with a problem with right-back Danilo, who seemed to flex a muscle but persevered until the end of the game as the boss ran out of substitutions.