What began as a fight between two men — one in a black Oakland Raiders Khalil Mack jersey — quickly escalated into a full-on brawl that featured multiple others, including two women throwing massive haymakers at one another.

The brawl spilled from their seats in the stands down the left field line to the concourse alongside the field, where it was eventually broken up by other fans not involved.

Multiple people were detained by police, but only four were booked into San Francisco County Jail.

Of the four, one was charged with public intoxication and suspicion of assault. The other three were arrested on suspicion of public intoxication and disturbing the peace. The age range of those arrested was 21-29.

While it’s impossible to tell who started the fight based on the multiple fan videos, the man in the black jersey was involved in nearly every aspect of the incident.

After being seen pummeling a man on the ground, the man in the black jersey turned his attention to two women fighting. He was seen kicking one of the women on the ground multiple times after she was thrown down by another woman. The man then, with the woman still on the ground, began to ruthlessly beat her with massive punches before eventually being pulled off by other spectators.