|The One Pitch|
|Season 1, Episode 1|
|Air date||October 6, 2013|
|Written by||Takeshi Konuta|
|Directed by||Mitsuyuki Masuhara|
The One Pitch (Unmei no Ikkyū, 運命の一球) is the 1st episode of the Diamond no Ace Anime series. The episode follows the storyline from chapter 1 of the manga.
Sawamura Eijun gets introduced as the captain of the Akagi Junior High baseball team. His team is below average, often making mistakes during critical moments and losing almost all matches. At their last match Sawamura gets scouted by Takashima Rei, the Assistant Director of Seidou High.She gives him the opportunity to visit the Seidou High School Baseball Team to watch their practice and is totally excited about what he sees there.
It does not take long until he came across Azuma Kiyokuni, a talented batter. Azuma is yelling at his teammate for cowardly pitching. He says if he isn’t even going to try, he should go home to his farmhouse.Sawamura – who favors friendship – gets angry and picks up a fight with him. You can't play baseball by yourself after all. Rei takes the chance and contrives it, that Sawamura plays together with Miyuki Kazuya and Azuma. While Sawamura is warming up Rei tells Miyuki that Sawamura's pitches are special and arouses his curiosity.
Characters in italic are only seen briefly and have yet to make a proper appearance.