CLEVELAND -- Video of the moment has gone viral -- even getting picked up by TMZ.com.
It depicts a man wearing a Cleveland Indians T-shirt punching a Cubs fan in the face near Progressive Field.
The victim then falls to the ground.
Cleveland Police said it happened Wednesday night after the Indians lost Game 7 of the World Series to the Chicago Cubs.
WARNING: Some may find the video disturbing
The victim, a 36-year-old man, told police there was a verbal argument before he was punched. Police say the victim refused to discuss additional information and didn’t want a report filed.
After initially denying medical attention, he was taken to MetroHealth Medical Center for treatment.
Detectives say they have tried making contact with the victim since the incident, but he has not communicated any further at this time.
Police are continuing their investigation.