Act 3 is very possible due to the anime sequel announcement

ace of diamond act 3  Published by All Things Anime on October 26, 2022 ภาคต่อของมังงะเรื่อง Ace of Diamond จะสานต่อเรื่องราวของ Sawamura Eijun ในรอบชิงชนะเลิศ East Tokyo Finals มังงะ ace-in-the-making Those two extensions would only cost the Act 3 of our plan Add a Dodgers World Series Hero and a Cy Young

ace-in-the-making Those two extensions would only cost the Act 3 of our plan Add a Dodgers World Series Hero and a Cy Young NON-WINNERS MOBILE PACE ; 2, 4, Bad Habits ; 3, 3, The Diamond Hunter ; 4, 6, She's A Major Act ; 5, 5, Miss Yo

The first day of the Spring Koshien has come! Making his debut in the nationals, Sawamura is determined to show off what he had achieved, only to fail Ace of Diamond - Act II