Ace of the Diamond act II -Second Season-

After a previous failure to reach nationals, the elite baseball team of Seidou High and its pitcher Eijun Sawamura decided to go all out at the fall tournament, give nationals a second shot, and in doing so convince their beloved coach not to retire. The Seidou team's determination saw them through to the fall tournament's finals where they faced Yakushi High and, after a tense match, ultimately claimed victory. With the nationals tournament on the horizon, Eijun and the team prepare for the biggest baseball games of their high school careers.

Synopsis from Anime News Network