Doctors at Boston's Massachusetts General Hospital in the United States have confirmed that Liverpool goalkeeper Loris Karius suffered a concussion during the Champions League final against Real Madrid.
The Germany international, who was widely criticised for his performance on the night, was booked in for medical scans by Liverpool as he holidayed in the States.
A statement on the hospital's website read: "After carefully reviewing game film and integrating a detailed history - including his reported present and immediate post-contact subjective symptoms - physical examination and objective metrics, we have concluded that Mr Karius sustained a concussion during the match on May 26, 2018.
"At the time of our evaluation, Mr Karius's principal residual symptoms and objective signs suggested that visual spatial dysfunction existed and likely occurred immediately following the event.
"Additional symptomatic and objectively noted areas of dysfunction also persisted. It could be possible that such deficits would affect performance.
"We also note that Mr Karius has reported significant and steady improvement since the concussive event, and we expect him to make a full recovery based on the results of the examination."
Karius, who missed out on a place in Germany's World Cup squad, apologised to Liverpool supporters for his mistakes in the final.