One of two men charged in a devastating assault on a San Francisco Giants fan outside Dodger Stadium told his own mother that he was involved and expected to "go down" for the attack.

Marvin Norwood was heard making the statement in a videotape played Wednesday during his preliminary hearing. He was talking to his mother by cellphone during an interview with police about the attack on victim Bryan Stow.

"Mom, you good?" Norwood says on the phone borrowed from one of the detectives. "You sure? Hey, I got arrested for that Dodger Stadium thing."

After a brief pause, he adds, "I was involved. I was. To a certain extent I was."

Moments later, he says, "I will very certainly go down for it."

Stow, a paramedic from Santa Cruz, suffered brain injuries in the attack on opening day of 2011. The beating prompted public outrage and led to increased security at Dodgers games.

In the recording, Norwood mentions the name of his co-defendant, Louie Sanchez. His last words on the conversation were, "I'm sorry."