One Shot at Forever by Chris Ballard

The Inspirational Story of a Coach, a Baseball Team, and the Season They'll Never Forget: In 1971, a small-town high school baseball team from rural Illinois playing with hand-me-down uniforms and peace signs on their hats defied convention and the odds. Led by an English teacher with no coaching experience, the Macon Ironmen emerged from a field of 370 teams to represent the smallest school in Illinois history to make the state final, a distinction that still stands.