Last Inning

Hatogaya, a man who used to love baseball and gave up on it, gets set up to take the fall for his company and gets sent to prison. A high school principal and his former coach, who's school is about to lose its baseball program bails Hatogaya out, but in exchange for getting him out of jail, he has to coach the school's "not-so-great" baseball team.

(Source: Endless Abyss)