List of Big Windup! episodes

Big Windup! is a Japanese anime television series based on Asa Higuchi's manga series Ōkiku Furikabutte. The story follows Ren Mihashi, a pitcher who was blamed by his middle school team for their string of losses, and as a result suffers from low self-esteem and transfers to a different high school. There, the school's first baseball team is being formed and Mihashi reluctantly joins as their Ace Pitcher. Assisted by his new teammates (and especially the catcher, Takaya Abe), he grows in stature, confidence and skill, helping his team excel with his own abilities.

The series was produced by A-1 Pictures and directed by Tsutomu Mizushima, with Yōsuke Kuroda handling series composition, Takahiko Yoshida designing the characters and Shirō Hamaguchi composing the music. The first season ran for 25 episodes and was broadcast in Japan on various Japan News Network stations, including TBS and MBS from April 13 to September 28, 2007. The first opening theme is "Dramatic" (ドラマチック, Doramachikku), performed by Base Ball Bear, while the first ending theme is "Medaka no Mita Niji" (メダカの見た虹), performed by Kozue Takada. The second opening theme is "Seishun Line" (青春ライン), performed by Ikimonogakari, while the second ending theme is "Arigatō" (ありがとう), performed by SunSet Swish.

A second season, Natsu no Taikai-hen (〜夏の大会編〜; "Summer Tournament Chapter"), aired for 13 episodes from April 2 to June 25, 2010. The story picks up where the first season left off, as the Nishiura High School baseball team continues to compete in the High School Baseball Invitational Tournament with the aim of playing in the finals at legendary Hanshin Kōshien Stadium. The opening theme is "Natsuzora" (夏空), performed by Galileo Galilei, and the ending theme is "Shisō Densha" (思想電車), by CureaL.

The series was licensed in North America by Funimation in 2008. It was released on two DVD sets on August 18 and September 26, 2009, respectively. Lance Heiskell, marketing director of Funimation, announced in January 2010 that the company had no plans to release the second season. The series debuted on the Funimation Channel on March 14, 2011. The second season was licensed by Right Stuf and released on DVD through its Nozomi Entertainment label on November 1, 2016.