Nearly 44,000 people attended opening day at Angel Stadium Monday night. Police say several minutes after the game ended, Powers and another man got into a fistfight.
Authorities say a third unidentified man then came up behind the Buena Park resident and struck him. Powers dropped, hitting his head on one of the steps. The suspects ran off.
Stadium police and medical personnel found 27-year-old Brian Powers bleeding and unconscious near a stairwell by the right field pavilion around 8:45 p.m., following the season opener between the Los Angeles Angels of Anaheim and the Oakland Athletics.
He was taken to UCI Medical Center where he died Wednesday morning.
"There is a possibility this was a case of self-defense, but again we don't have that concrete info yet," said Sgt. Martinez. "There's a possibility the victim did provoke this fight, but we don't know. We're asking for the public's help."
Police are looking at surveillance video of the area to try to identify the suspects. They hope any witnesses at Monday's game will talk with investigators.
"It was right after the game, and a lot of people staying after winning the first game is always exciting," said Tim Mead, Angels vice president of communications. "We're confident someone saw something; so is Anaheim PD. Hopefully someone will step forward to provide some of missing pieces to the puzzle."
Since the fight took place near one of the stadium's primary exits, police believe there were likely many witnesses.
So far, the attackers are only described as being in their mid to late 20s with goatees.
Anyone with information is asked to contact Anaheim police at (714) 765-1944.
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