Nightly News | June 06, 2013
>>> with the school year winding down, the boys and girls of summer will be taking the field in baseball programs across the country. and for some, this maybe a life changing experience as they learn what they can achieve both on and off the field. nbc's ron maut has on making a difference report.
>> reporter: since 1991 , young new yorkers like 14-year-old marlin silva have stretched beyond what they thought possible, thanks to baseball.
>> it taught me how to be a team player , a person, a positive out going child that i am.
>> harlem, rbi, which grew from an abandoned lot to this program, it attracted visitors such as jason medina, who's coach said was no prince.
>> i'm not exactly a go along get along type of kid. he was self-directed and new what he wanted for himself when he left here. but also was very clear about what he owed to his teammates and to his community.
>> reporter: today's a 30-year-old cop in washington, d.c. name officer of the year in 2011 .
>> r. he's a hit on the police force because they're hitting baseballs again in this park. part of medina's efforts to play it forward. he started ward 7 baseball. modeled largely after harlem rbi. funding much of it from his own pocket with a simple goal.
>> and that's change a life. try to show somebody that there's somebody that actually cares about you.
>> reporter: and that growth is a reality. already 72 players strong.
>> it's good because people get to stay out of trouble and they come out here and have fun.
>> it's a good community thing to do.
>> reporter: busy transforming lives. one kid, one pitch, at a time.
>> you did a great job.
>> reporter: nbc washington .
>> that's our broadcast for this