sembatsukōtōgakkōya kyūtaikaidattara
1. If/When the selected high school baseball tournament…; If the selected high school baseball tournament were…
Noun
1. If/When the selected high school baseball tournament…; If the selected high school baseball tournament were…
1. if it's the case
1. senior high school; high school
1. school
1. professional baseball
1. baseball club (at a university, corporation, etc.); baseball team
1. fireworks display; display of fireworks
1. girls' school
1. school name
1. (legally) incorporated educational institution