The Rugby anime is based on the manga of the same name.
The official website for the anime adaptation of All Out!! has announced the release date, which is in October 6, and a new visual which is the one you can see above.
Anime News Network describes the history as follows:
“The manga’s story centers around Kenji Gion, a short first-year high school student. On his first day at Kanagawa Prefectural High School, he meets the tall Sumiaki Iwashimizu during a game of rugby. Kenji Gion strikes a friendship with Sumiaki, and soon joins the rugby club. The manga portrays the struggles of the mismatched pair.”
Via: Anime News Network