Meimon! Daisan Yakyuubu

is a Japanese manga series by Toshiyuki Mutsu serialized in Weekly Shonen Magazine from 1987 to 1993. It won the Kodansha Manga Award in 1989 for best shonen.

An anime series adaptation co-produced by Studio Comet and Nihon Ad Systems was premiered on Fuji TV for 40 episodes from October 22, 1988 to September 29, 1989, where it initially aired on Saturdays before rescheduling to Friday from Episode 18 onwards.

A game was published by Bandai and released for NES on August 8, 1989.

The manga was eventually followed by 2 sequels named and.

Plot
The story focuses on the prestigious Sakura High School (桜高校), which is known for its achievement record for its baseball clubs entering Koshien. Asunaro Hinoki is part of the third-string team, otherwise known as the "Third Baseball Club", which is about to be disbanded. Now the "third team" must train vigorously through hard work and sweat and defeat the varsity team in order to stay in the game.