Rounding Third by Richard Dresser

A tumultuous, hilarious journey of two Little League coaches through an entire season, from their first tentative meeting to the climactic championship game. Don is the tough, blue-collar, win-at-all-costs veteran coach whose son is the star pitcher. Michael is a newcomer to baseball, who believes that the job of the coach is to make sure everyone has fun. Don thinks they should be teaching the kids how to win.