Major watch order

Episodes 1–26: Goro's childhood and Little League years, from watching his father play to forming his own team, the Mifune Dolphins. Melodramatic in places, but it sets up everything that follows.

A feature film set between seasons 1 and 2, when Goro is about ten and playing Little League in Fukuoka. It shows how he hurts his right shoulder, which is why he pitches left-handed from season 2 on. Released after season 4, but it fits best here.

Episodes 27–52: Goro, now a left-handed pitcher, plays for his middle school team, then gets into Kaido, the elite baseball high school.

Episodes 53–78: Goro leaves Kaido for Seishu High, a school with no baseball club, and builds a team from nothing to take on Kaido in the prefecture tournament.

Episodes 79–104: Goro goes to the United States, gets through tryouts and climbs the minor leagues, including his rivalry with Joe Gibson Jr. A new studio takes over from here.

Episodes 105–129: the Baseball World Cup, an international tournament where Goro pitches for the Japan national team.

Episodes 130–154: Goro in the major leagues, through injury and comeback. The TV run skips the World Series itself, which was animated later as an OVA.

Two OVA episodes that animate the World Series the TV series skipped. It's canon and widely seen as the proper ending, so watch it right after season 6, even though it came out after Message.

A one-episode epilogue set many years later, when Goro's pitching career is ending and his children are growing up. It was bundled with the last manga volume and leads into MAJOR 2nd. Not a recap.

The sequel series about Goro's son Daigo, who struggles to live up to his father's name. He joins the Mifune Dolphins with Hikaru, the son of Goro's old friend Toshiya Sato.

Daigo becomes captain of his middle school team, mostly girls and beginners. The broadcast paused for a month in spring 2020 because of COVID but finished all 25 episodes.

Episodes 1–26: Goro's childhood and Little League years, from watching his father play to forming his own team, the Mifune Dolphins. Melodramatic in places, but it sets up everything that follows.

Episodes 27–52: Goro, now a left-handed pitcher, plays for his middle school team, then gets into Kaido, the elite baseball high school.

Episodes 53–78: Goro leaves Kaido for Seishu High, a school with no baseball club, and builds a team from nothing to take on Kaido in the prefecture tournament.

Episodes 79–104: Goro goes to the United States, gets through tryouts and climbs the minor leagues, including his rivalry with Joe Gibson Jr. A new studio takes over from here.

A feature film set between seasons 1 and 2, when Goro is about ten and playing Little League in Fukuoka. It shows how he hurts his right shoulder, which is why he pitches left-handed from season 2 on. Released after season 4, but it fits best here.

Episodes 105–129: the Baseball World Cup, an international tournament where Goro pitches for the Japan national team.

Episodes 130–154: Goro in the major leagues, through injury and comeback. The TV run skips the World Series itself, which was animated later as an OVA.

A one-episode epilogue set many years later, when Goro's pitching career is ending and his children are growing up. It was bundled with the last manga volume and leads into MAJOR 2nd. Not a recap.

Two OVA episodes that animate the World Series the TV series skipped. It's canon and widely seen as the proper ending, so watch it right after season 6, even though it came out after Message.

The sequel series about Goro's son Daigo, who struggles to live up to his father's name. He joins the Mifune Dolphins with Hikaru, the son of Goro's old friend Toshiya Sato.

Daigo becomes captain of his middle school team, mostly girls and beginners. The broadcast paused for a month in spring 2020 because of COVID but finished all 25 episodes.