Patriot Games: Volleyball Player Sings National Anthem After Sound System Malfunction

It was a knockout performance that wasn't planned.

A high school athlete belted out a rousing rendition of the national anthem at her volleyball match in San Antonio Sunday, but her knockout performance wasn't planned.

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A recording of the national anthem was supposed to play on the sound system prior to the game, but it malfunctioned. That's when 17-year-old senior Marina Garcia grabbed a microphone and started singing.

She told Inside Edition: “Everyone just started cheering at me to sing.”

She said she was nervous at first.

“When they were telling me to do it, I was kind of like, 'no,' because I'm so shy and then I felt like, 'you know what? I'm just going to do it,'” she said.

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She received a massive standing ovation and said, “it's a feeling I’ll never forget.”

Her impromptu performance was so good she was invited to perform at the next game.

Watch: Opposing High School Volleyball Teams Stand In Solidarity to Sing National Anthem Together