The assault happened around 2 a.m. Thursday at 1300 E. Passyunk Avenue.
It left 28-year-old Isidro Cortez of Queens, New York, dead. His 64-year-old father and 28-year-old friend were injured.
Video released by Philadelphia police on Friday evening shows the brutal attack from multiple angles.
One camera angle shows the victim being punched and kicked while on the ground. Another camera shows one of the suspects wildly swinging a metal trash can lid.
According to police, the victims were apparently at the Philadelphia Union soccer game in Chester, Pennsylvania on Wednesday night, where the Union lost to Mexico City's Club America.
After the game, police say they went to Pat's where Cortez, his father and his friend got into an argument with four males wearing yellow soccer jerseys with Club America written across the shirt.
That argument escalated into a fight.
After the melee the suspects left along with the rest of their group in two vehicles. One vehicle is described as a grayish small four-door car, possibly a Ford, with distinct right rear quarter panel damage, and the other vehicle is described as a light-colored Ford Explorer SUV.
While alcohol isn't served at Pat's King of Steaks, detectives swabbed beer cans at the scene for DNA evidence.
Neighbors say they know to avoid the area in the early morning hours.
"More police is probably necessary. I would say that nothing good typically happens past one in the morning," said Nathan Gonzales of South Philadelphia.
The owner of Pat's said this latest incident has police stepping up patrols. He's told there will be a squad car parked at the intersection during late night and early morning hours.
SEE ALSO: Police ID man charged with murder after shooting at Pat's King of Steaks in Philadelphia
This is the second deadly incident at Pat's in just a few months.
On July 22, 22-year-old David Padro, from the 2700 block of Federal Street in Camden, New Jersey, was shot in the back following a fight at Pat's.
Thirty-six-year-old Paul Burkert of Doral Drive in Reading, Pa. was charged with murder in the case. The shooter's lawyer claims it was in self-defense, but the victim's family says otherwise.