The chapters of the Japanese manga series Big Windup!
The series has been published in Kodansha's [[Seinen manga|seinen manga magazine Monthly Afternoon since 2003.
Kodansha has collected its chapters into individual tankōbon volumes, with the first one released on March 23, 2004.
[2] The series follows Ren Mihashi, the previous ace pitcher in his middle school's baseball team, who suffers from low self-esteem due to a losing streak and transfers to a new high school.
It is the first year that Nishiura high school has a baseball team, and they set a lofty goal of playing in the finals at legendary Hanshin Kōshien Stadium.