LOS ANGELES — A friend who witnessed a vicious attack on a San Francisco Giants fan at Dodger Stadium testified Wednesday he threw his body over his friend's head to prevent further attacks by a raging assailant.

Corey Maciel, a fellow paramedic who came with victim Bryan Stow from Northern California to cheer for the Giants, testified at a preliminary hearing for two men charged with the attack. Stow has been permanently disabled with brain damage.

Defendants Louie Sanchez and Marvin Norwood showed no reaction to the testimony being heard by a judge to determine if there is sufficient evidence to order them to stand trial on mayhem and assault charges. Both have pleaded not guilty.

Maciel described a hostile atmosphere, with Dodgers fans throwing food at them and cursing during last year's opening day game.

When they left, he said, a Dodgers fan ran at Stow and let loose a haymaker punch at his head. He said Stow fell unconscious, cracking his head on cement, then was kicked in the head and torso. Maciel recalled trying to shield Stow as assailants advanced.

Moments earlier, Maciel said, the same man had pushed Stow and punched two other men in their party.

"We were walking and we were also being heckled," he said. "Bryan said, `I hope they code.' ... That's a medical term for cardiac arrest."

He said two men followed them through the parking lot, and one of the men asked Stow: "'What (expletive) did you say, homie?'"

He said another member of their group got punched by a short Hispanic man who then hit Stow when he wasn't looking.

"As soon as he was punched, he was unconscious and fell back on his head," Maciel testified. "He was unable to brace himself. I saw his head bounce off the concrete. I heard the crack."

The man then kicked Stow in the head at least three times and again in the torso, according to the testimony.

Maciel said he heard profanities and one assailant say, "(expletive) the Giants. That's what you get."

He said men continued to advance on Stow and seemed intent on attacking again.

"I threw my body over Bryan's head to stop any more physical contact," he said.

Another friend, also a paramedic, held the injured Stow's head to protect his spine.

"Bryan was deeply unconscious with his eyes open," Maciel said. "He didn't respond to any outside stimuli. ... He was snoring, which indicates a very deep level of unconsciousness."

He said there was blood on Stow's head and coming from his ear.

The witness at times took deep breaths to get his emotions under control as he described the events that left Stow permanently disabled with no use of his arms and unable to carry on a conversation. He continues to undergo rehabilitation therapy but is not expected to make a full recovery.

Like other witnesses, Maciel did not offer a positive identification of the defendants, but the physical descriptions suggested it was them.

Prosecutor Beth Silverman played a recording of the 911 call made by a woman bystander. She handed the phone to Maciel, who used his paramedic training to give a full description of what had happened.

He told the operator his friend had suffered a trauma and his respiration was decreasing rapidly. He also said then it would be difficult to identify the assailant.

Related on HuffPost:

The Los Angeles Police Department stepped up security for the 2012 Dodgers' opening day game. One year earlier, San Francisco Giants fan Bryan Stow was brutally beaten in the Dodger stadium parking lot following the 2011 opening day game.
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  • March 31, 2011: Bryan Stow Beaten At Dodger Stadium

    After the opening day game at Dodger Stadium in 2011, a San Francisco Giants fan was found unconscious and in critical condition in the stadium parking lots. In the video above, police tell the Associated Press that some Dodgers fans followed and taunted a group of Giants fans walking into the parking lot. The altercation ended in the hospitalization of one of the Giants fans. Authorities didn't release the name of the victim, but he was later identified as Bryan Stow, a 42-year-old EMT and father of two who was visiting from the Bay Area.

  • April 11, 2011: Dodgers & Giants Honor Stow

    The San Francisco Giants and Los Angeles Dodgers stand for a moment of silence for paramedic Bryan Stow, pictured above, who was beaten at Dodger Stadium earlier this month, before their baseball game in San Francisco, Monday, April, 11, 2011. (AP Photo/Eric Risberg)

  • April 14, 2011: LAPD Steps Up Security

    Los Angeles Police Department chief Charlie Beck, left, listens in on a meeting with police officer and security at Dodger Stadium prior to the Dodgers' Major League Baseball game against the St. Louis Cardinals, Thursday, April 14, 2011, in Los Angeles. During this time, Bryan Stow, remained hospitalized in Los Angeles in a medically induced coma. (AP Photo/Mark J. Terrill)

  • April 14, 2011: LAPD Steps Up Security

    Los Angeles Police Department officers patrol the parking lot outside Dodger Stadium prior to the Dodgers' Major League Baseball game against the St. Louis Cardinals, Thursday, April 14, 2011, in Los Angeles. (AP Photo/Mark J. Terrill)

  • April 14, 2011: LAPD Steps Up Security

    Los Angeles Police Department officers stand by as fans enter prior to the Dodgers' Major League Baseball game against the St. Louis Cardinals, Thursday, April 14, 2011, in Los Angeles. (AP Photo/Mark J. Terrill)

  • April 14, 2011: LAPD Steps Up Security

    Los Angeles Police Department and security deploy at Dodger Stadium prior to the Dodgers' Major League Baseball game against the St. Louis Cardinals, Thursday, April 14, 2011, in Los Angeles. (AP Photo/Mark J. Terrill)

  • May 16, 2011: Bryan Stow Transferred To SF

    Bryan Stow, a Bay Area native, is transported from a Los Angeles hospital to San Francisco. Here, he's being escorted by his neurosurgeon Dr. Gabriel Zada, left, the LAC-USC medical team and the air and ground transport team to an ambulance waiting to take him to the Burbank Airport. (AP Photo/Al Seib,Pool)

  • May 17, 2011: LAPD Announces Search For Suspects

    In a May 17, 2011 news conference, Los Angeles Police Chief Charlie Beck, at podium, announces the launching of 300 billboard ads, background, throughout Los Angeles seeking information on the suspects who severely beat San Francisco Giants fan Bryan Stow in the Dodger Stadium parking Lot on March 31, 2011. (AP Photo/Damian Dovarganes)

  • May 18, 2011: LAPD Cadet Hand Out Flyers About Suspects

    Los Angeles Police Department cadet Christian Ibarra hands out flyers at the entrance to Dodger Stadium prior to the Dodgers' baseball game against the San Francisco Giants, Wednesday, May 18, 2011, in Los Angeles. During this time, authorities were still seeking information on two men suspected of beating Giants fan Bryan Stow on the Dodgers' opening day. (AP Photo/Mark J. Terrill)

  • May 22, 2011: LAPD Announces Arrest

    In this May 22, 2011 news conference, Los Angeles Police Chief Charlie Beck, right, announces the arrest of a suspect in the March 31 beating of San Francisco Giants fan Bryan Stow at an Opening Day game at Dodger Stadium. While the suspect was not named, it would turn out to be East LA resident Giovanni Ramirez. Ramirez was later exonerated as a suspect. (AP Photo/Reed Saxon)

  • May 22, 2011: LAPD Community Alert

    This Los Angeles Police Department wanted poster was photographed during the Sunday, May 22, 2011 news conference. It shows information regarding wanted suspects for the March 31 beating of San Francisco Giants baseball fan Bryan Stow in Los Angeles. Los Angeles police officials announced the arrest of Suspect 1, left, whose name was not released at the time. He would turn out to be Giovanni Ramirez, who was cleared of all suspicion later on in the case. Suspect 2 remained at large, as did Suspect 3, not depicted, the female driver of the getaway vehicle. (AP Photo/Reed Saxon)

  • May 22, 2011: Giovanni Ramirez Arrested

    Ramirez was arrested early Sunday morning in an East Hollywood apartment. He was believed to be one of two aggressors in the attack on Giants fan Bryan Stow outside Dodger Stadium after the Dodger home opener. During the arrest, police found a firearm on the premises, which is a violation of Ramirez's parole. He was sentenced to 10 months in jail for the parole violation but was never charged for the crime against Stow for lack of evidence. Ramirez was eventually exonerated in July, when LAPD arrested two new suspects. However, he still had to carry out his 10 month sentence for the parole violation and was released March 17, 2012. Giovanni Ramirez is shown in this undated file photograph obtained by The Associated Press. (AP Photo)

  • May 23, 2011: Stow Family Relieved At Arrest

    From left to right, David Stow, father, Bonnie Stow, sister, Erin Collins, sister, and Ann Stow, mother, of San Francisco Giants fan Bryan Stow, express thanks during a news conference at a hospital in San Francisco, Monday, May 23, 2011 the day after a suspect was arrested for Bryan's brutal beating. A tip from a parole officer late last week led to the arrest of Giovanni Ramirez, 31, of Los Angeles in the attack. (AP Photo/Paul Sakuma)

  • July 22, 2011: LAPD Announces 2 New Arrests

    Los Angeles Mayor Antonio Villaraigosa, left, and Police Chief Charlie Beck take questions from the media Friday, July 22, 2011, in Los Angeles, Calif. Two new suspects were in custody today on suspicion of nearly beating to death a San Francisco Giants fan after attending the March 31 home opener between the Giants and Dodgers at the Dodger Stadium parking lot. The arrests eventually exonerated Giovanni Ramirez, a previous suspect. During this time, Bryan Stow, 42, remained hospitalized in serious condition. (AP Photo/Damian Dovarganes)

  • August 10, 2011: New Suspects Arraigned

    In this courtroom sketch, Louie Sanchez, 29, accused of beating San Francisco Giants fan Bryan Stow at Dodger Stadium on opening day, is arraigned in Los Angeles Criminal Court Wednesday, Aug. 10, 2011. Sanchez and Marvin Norwood, 30, who was arraigned at the same hearing, have been charged with mayhem, assault, battery and other counts in the beating of Bryan Stow, who suffered devastating brain injuries. (AP Photo/Bill Robles)

  • August 10, 2011: New Suspects Arraigned

    In this courtroom sketch, Marvin Norwood, 30, accused of beating San Francisco Giants fan Bryan Stow at Dodger Stadium on opening day, is arraigned in Los Angeles Criminal Court Wednesday, Aug. 10, 2011. (AP Photo/Bill Robles)

  • September 3, 2011: Stow's Dad Honored

    David Stow, father of San Francisco Giants fan Bryan Stow, throws out the honorary first pitch before a baseball game between the Giants and the Arizona Diamondbacks in San Francisco, Saturday, Sept. 3, 2011. (AP Photo/Tony Avelar)

  • October 11, 2011: Stow Transferred To Rehab

    Bryan Stow was transferred from San Francisco General Hospital to an undisclosed rehab facility in the Bay Area. In this handout photo provided by San Francisco General Hospital, Dr. Geoff Manley, the hospital's neurosurgeon chief, left, poses next to hospital workers as Bryan Stow, second from left, is transferred from San Francisco General Hospital in San Francisco, Tuesday, Oct. 11, 2011. (AP Photo/San Francisco General Hospital)

  • March 31, 2012: Support for Bryan Stow

    Bryan Stow's family regularly <a href="http://support4bryanstow.com/" target="_hplink">updates this website</a> to let his supporters know how he's doing in rehab. Their last update was March 31, 2012 -- one year after his brutal beating: <blockquote>Because Bryan still has so far to go, it's easy to get discouraged, feel down and even get angry for what happened to him. We feel sad for Tyler and Tabitha, who need their dad. We feel sad for Bryan, for having to go through what he's been through and what he will go through for the rest of his life. But, because he has his life we are forever thankful. </blockquote> (Photo courtesy of <a href="http://support4bryanstow.com/" target="_hplink">Support4BryanStow</a>)