Los Angeles District Attorney spokeswoman Sandi Gibbons, at microphones, talks to reporters after arraignment was postponed for two Southern California men charged with severely beating a San Francisco Giants fan at Dodger Stadium on opening day. (Reed Saxon/AP)

Last month court records painted a graphic picture of the events that led to life-threatening injuries and brain damage when Giants fan Bryan Stow was assaulted in the Dodger Stadium parking lot on opening day.

Detectives now believe Louie Sanchez, 29, and Marvin Norwood, 30, attacked another group of young Giants fans in the parking lot before going after Stow.

Prosecutors say Sanchez then punched two of Stow’s friends before chasing the 42-year-old paramedic down and punching him in the side of his head from behind. In a court document, witnesses say Stow “immediately lost consciousness and fell sideways to the ground without breaking his fall. When Stow’s head hit the ground witnesses heard his head impact the concrete and saw it bounce.”

Sanchez then allegedly kicked Stow several times in the head and Norwood did the same before standing over Stow’s unconscious body and saying, “Who else wants to fight?”

Court documents state Sanchez and Norwood caused Stow “to become comatose due to brain injury and to suffer paralysis.”

Matthew Lee, one of Stow’s friends who watched the beating, was expected to serve as a witness but died from an allergic reaction to eating a peanut over the weekend.

Sanchez and Norwood are charged with assault, battery, mayhem and several other counts. On May 22, the Los Angeles Police Department arrested Giovanni Ramirez who they thought was one of the suspects involved in the beating. Ramirez was dismissed without charges and publicly exonerated on July 22. Sanchez — who is also accused of misdemeanor battery on a woman at the same game — has a criminal history that includes battery on a spouse or cohabitant, carrying a loaded gun in a car and DUI.

Two weeks ago Stow — who remains hospitalized with severe brain trauma injuries — underwent emergency surgery for fluid buildup in his head. He has suffered seizures and was initially placed in a medically-induced coma following the attack.

Giants two-time Cy Young award winner Tim Lincecum donated $25,000 to help cover Stow’s medical costs in the immediate aftermath of the incident and the team raised nearly $70,000 by gathering donations at a Dodgers-Giants game on April 11. Barry Bonds also helped Stow’s cause, volunteering to help pay for the college educations of Stow’s two children.