. >> if that isn't enough, matt has also gotten to interview movie star billy crystal and former president george w. bush. >> of course, their former or current jobs weren't necessarily about baseball, but george bush used to own the texas rangers, billy crystal was a huge yankee fan, and so both of which were great conversations to have. >> along with his blog and video blog, matt wrote a book titled "amazing aaron to zero zippers" about the a's to z's of baseball history. >> and, basically, it's an alphabet book, so it's 26 chapters -- i mean, basically, they're letters -- of just any aspect of baseball history, whether it be a player, a team, uh, a moment, a stadium, an era. >> with the help of summer games books, matt plans to donate all of the proceeds to charities having to do with baseball. >> those four charities are the jackie robinson foundation, the lou gehrig foundation for als patients, the hall of fame's charity, and then derek jeter's turn 2 foundation. >> although he might be a yankee fan at heart, matt is really just a fan of baseball. [ up-tempo music playing ] clearly a kid with a brig