Brazil's national team and Real Madrid star Marcelo made fans worried when he had to leave the field in the last group match against Serbia with just ten minutes left.
Everyone was surprised, as it seemed like nothing had happened, but the footballer was holding his lower back with a pained expression on his face.
Brazil's coach Tite immediately made a substitution, and Marcelo was taken care of by the medical team.
It seems like the Brazilian avoided serious health issues, but the reason for his back pain is quite peculiar.
Doctors revealed a surprising reason why Marcelo could have felt unexpected pain. It turns out it may be related to the hotel bed where the footballer slept.
"It's too early to talk about exact prognosis, but the pain could be related to the bed where the footballer slept," said one doctor.
"It could be muscle spasms. Marcelo is now under observation and as soon as he feels better, he will be able to play," he added.
Marcelo himself reassured fans with a message on social media: "Thank you for your attention. I'll be back soon. We should be glad that nothing serious happened."
Brazil is set to face Mexico in the round of 16 on Monday.
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