The Los Angeles Dodgers opening day was marred by violence when a San Francisco Giants fan was critically beaten in the stadium parking lot after the game.

Los Angeles police were searching Friday for two Dodgers fans responsible for assaulting and critically injuring a man wearing San Francisco Giants apparel following Thursday’s game.

"The man suffered a serious head injury during the assault after the game,'' said Los Angeles Police Department Sgt. Sanford Rosenberg, watch commander at the Northeast Station.

Rosenberg said the victim was one of three Giants fans attacked in the parking lot around the end of the game by two unidentified men wearing Dodgers clothing.

The unprovoked attack occurred about 8:30 p.m. in Parking Lot 2 when two men in Dodgers clothing approached three victims in Giants apparel, police said.

The men then attacked the trio, kicking and punching them and shouting expletives about the Giants as they delivered the blows, Rosenberg said. The attack left one victim hospitalized in critical but stable condition, Rosenberg said.