Two men accused of brutally beating a San Francisco Giants fan outside Dodger Stadium pleaded not guilty Wednesday even though prosecutors said they had made admissions in the case.

Louie Sanchez, 28, and Marvin Norwood, 30, entered their pleas during a brief arraignment to charges of mayhem and assault and battery in the March 31 attack of Bryan Stow, a Santa Cruz paramedic who suffered severe brain injuries and remains hospitalized.

Prosecutor Frank Santoro said in court he did not object to a motion to allow television cameras in the courtroom because the case is built on admissions, not witness identifications.

“The case is based on admissions from both of them,” said Santoro, who provided no further details.

He said 20 witnesses had been asked to look at the men, but only one could positively identify Sanchez and no one recognized Norwood.