How many balls are on the field maximum?

[chmconkling]

I feel dumb for asking this, but i cant find it anywhere, does anybody know the maximum amount of balls on the field?

[SteveGPage]

FRC Q&A

Game - The Game » Pre-Match » G05
Q. Are there 18 total basketballs in use? I.e. are there 2 balls on the coopertition bridge plus unused balls?
A. Yes, each Match will begin with 18 Basketballs on the Court.

[chmconkling]

Thank you!!