minor league

US /ˌmaɪnər ˈliːɡ/
UK /ˌmaɪnər ˈliːɡ/
"minor league" picture
1.

a professional sports league that is not at the highest level of competition

:
He spent several years playing in the minor league before making it to the majors.
Many promising young players start their careers in the minor league.
2.

of lesser importance, significance, or quality

:
His contributions to the project were strictly minor league.
Compared to the main event, this side show is pretty minor league.
1.

not important or serious; of low quality or standard

:
His acting in the play was pretty minor league.
Don't bother with that restaurant; it's totally minor league.