Before Clovis High School faced off against Buchanan High School during the Central Section softball championship on May 25, the announcer said the national anthem would not be played.
She said people were confused at first, because it didn't make sense to not play the anthem - especially since it was Memorial Day weekend.
Event coordinator Bob Kayajania took responsibility for the decision to not have the anthem played at the game.
After the announcement was made, witnesses said many people booed and chose to take matters into their own hands.More news: Rudy Giuliani booed by Yankees fans on his birthday
Afther the players were introduced, both teams turned toward the flag to prepare for the singing of the national anthem, KMPH reported.
Raw video: Crowd at California baseball game sings the national anthem. Before long, most everyone in the stadium was singing.
"Honestly, I was shocked (when) the announcer stated, 'There will be no anthem, let's just play softball, '" Tiffany Marquez, who attended the game and uploaded a video of the scene to Facebook, told the Fesno Bee.
People in the crowd can be seen standing and singing "The Star-Spangled Banner" on their own.More news: Amazon 'evaluating options' after woman reports device shared private conversation
"The national protocol is the first game of the session you have the national anthem", Kayajania told the Bee. "There I was, standing in the middle of a true testament to unity and patriotism", she added triumphantly.
"The national protocol is the first game of the session you have the national anthem", he said. But going forward, they will play the anthem at every game.
The controversy over the anthem started in 2016 when some players in the league began kneeling during the anthem, claiming that it was part of a protest against what they called racially motivated police violence.More news: Justin Timberklake meets with Santa Fe victims