An angry spectator whipped Al Ittihad striker Abderrazak Hamdallah from the stands during an argument after Thursday's Saudi Super Cup final.
The disturbing incident occurred during the award ceremony after Al Hilal's 4-1 win over Al-Ittihad in Abu Dhabi.
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Video shared on social media showed Hamdallah reacting to the provocation of the individual, who was wearing a thawb and was in the stands close to the field.
Hamdallah, 33, a Morocco international, shouted at the spectator before throwing water at him.
The man responded by reaching over the railing and hitting Hamdallah with a whip.
Hamdallah then had to be restrained, as did some of his Al Ittihad teammates and staff who tried to climb into the stands.
The supporter was led away by security personnel. Al Ittihad have not commented on the incident.
Hamdallah scored Al Ittihad's only goal of the game, having previously missed a penalty.