|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 comes across Azuma Kiyokuni, a talented batter who is bound to play professional baseball upon graduation from high school. Azuma yells at a teammate for cowardly pitching. He says if he isn’t even going to try, he should go home to his farmhouse.Sawamura – who treasures his friendship with his teammates – gets angry and picks up a fight with him. As after all, one can't play baseball alone. Rei takes the chance and contrives it. She baits Sawamura to play against Azuma. Another Seidou team member, Miyuki Kazuya, volunteers to catch Sawamura's pitches. While Sawamura warms up, Rei tells Miyuki that Sawamura's pitches are special which arouses Miyuki's curiosity.
Characters in italic are only seen briefly and have yet to make a proper appearance.