OKLAHOMA CITY -- Testimony begins in the murder trial of a man accused of killing another man with a baseball bat.
The deadly brawl took place last year outside the Boomer Sports Complex last April.
Eric Noyola has admitted to striking the deadly blow.
In court several witnesses described a free for all between two rival teams.
Those witnesses confirmed Noyola used the bat to hit Betancur from behind, but the question for the jury gets more complicated.
"The truth is it was 100 percent self-defense, just with a tragic ending," said attorney Scott Adams.
Attorney Adams initially represented Noyola.
Although Noyola now has a new attorney, he is continuing to argue he never intended to kill the victim.
"When it's a free for all. It's very complex to determine whether he was using self-defense in a legal manner," said legal analyst David McKenzie.
McKenzie says Noyola hitting Betancur while the victim's back was turned does weaken, but does not eliminate, the claim of self-defense.
"Coming up behind them and hitting him with a bat does not take away self-defense, but it may water it down a little bit," said McKenzie.
During earlier court hearings, dozens of Betancur's loved ones came to court wearing T-shirts with Ricky's name.
The judge refused to let the family wear those shirts into court during trial.
The family has declined to talk about the case until after the jury makes their decision.
Testimony in the case is expected to continue for the next several days.