Before the Washington Nationals took on the San Francisco Giants in Game 2 of the National League Division Series at Nationals Park, an Army veteran wounded in Iraq threw out the ceremonial first pitch in a very unusual and crowd-pleasing way.

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Sgt. First Class Brian Keaton (Ret.), who spent three-and-a-half years at Walter Reed National Military Medical Center recovering from a traumatic brain injury and post-traumatic stress disorder, decided that instead of merely tossing the ball, he would make his pitch a little more memorable.

In the grass near the mound, Keaton dropped to his stomach, crawled several feet and lobbed the ball towards home plate, as if it were a grenade, to the roar to the crowd.

Watch the must-see clip from Major League Baseball's YouTube channel below.

UPDATE: Keaton talked to "Fox and Friends" on Monday, revealing that he wrote the name of his wife, Kristin, in the dirt on the mound after his pitch.

He explained that he has been deployed so much since 2001 and wished she could have been on the mound with him.

"I would have never been there if it wasn't for my wife raising kids while I was gone and loving me and taking care of me when I was sick. She's the hero," said Keaton.

Watch the interview above.

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