Washington Nationals react after an adult steals the ball from a little child in the audience.

The Washington Nationals baseball organisation is supporting a 10-year-old girl whose chance to achieve greatness

catching a ball launched by right-fielder Joey Meneses—was ruined by an unruly spectator.

Gina Hillard, a mother from Virginia, tweeted "Grown guy grabs baseball from small child" on September 1 along with a video of the Nationals' 7-5 victory against the Oakland Athletics

"Can you get Joey Meneses to autograph a baseball and give it to my daughter?" she added.

Hillard captured a video of her daughter Avery preparing to catch Meneses' pitch during warm-up practise while holding a baseball mitt in her hand. 

The ball was about to be grabbed when an adult fan rushed in and took control.

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