Police investigating video that shows Dodger Stadium beating victim watching game

Police detectives investigating the assault on San Francisco Giants fan Bryan Stow after the Dodgers’ home opener are now examining a video that shows the man being confronted by a spectator inside Dodger Stadium while he is watching the game.

The short, grainy video posted on the website TMZ.com was purportedly taken during the March 31 Dodgers-Giants game. Stow, a Santa Clara County paramedic, suffered brain damage when he was later attacked in a stadium parking lot by two men, authorities said.

In the video, Stow can be seen seated during the game, wearing a Giants jersey and trying to ignore a seemingly angry Dodgers fan who is pointing at him.

The fan, dressed in a black Dodgers shirt with “Banda 23” on the back, is standing a few feet in front of Stow during the verbal confrontation.

LAPD Cmdr. Andrew Smith said the department will review the video for any clues. Detectives have already examined hundreds of hours of security video from stadium cameras.

TMZ officials would not reveal where they obtained the video. Nor was it clear what the name “Banda” refers to. There are no players on the Dodgers’ roster with that name.

The man in the video who confronts Stow, a 42-year-old father of two, does not appear to resemble Giovanni Ramirez, 31, whom police have identified as the primary suspect in the assault.

Ramirez was arrested in May but has not been charged in the attack. He was returned to state prison last week on an unrelated parole violation.

Ramirez’s lawyers said their client claims he was with his daughter the night of the assault and did not attend the game. They said they were unaware of the video until it appeared on TMZ.

The two men punched and kicked Stow in Parking Lot 2 after knocking him to the ground. The pair then fled in a car with a woman and a child believed to be about 10. Authorities believe the woman was wearing an Andre Ethier Dodgers shirt.

Doctors at San Francisco General Hospital announced last week that Stow’s condition had been upgraded to serious and that he had opened his eyes and shown some movement. They said they were heartened by the developments but that Stow’s prospects for recovery remain uncertain.

richard.winton@latimes.com