One is a charity that makes music more accessible to children by providing thousands of instruments to schools and community programs.
The other is a home run for David. His charity provides critical pediatric services in New England and in his homeland of Dominican Republic.
Now, if you pitch in and help either cause, you've got a chance to score a game of catch with the athlete at Fenway Park and enjoy the full Red Sox experience. All you have to do is head over to his Prizeo page and donate at least $10.
Big ups to "Big Papi" for this pretty cool prize and even cooler charity work!
Check out his contest video below: