The Principal Charity Classic is inviting fans to turn their college basketball tournament predictions into a charitable competition through its Principal Charity Classic Bracket Buster Challenge. Participants can submit their brackets before the tournament begins for a chance to win 50% of the prize pool, with the other half donated to programs supporting Iowa youth development. Participants can join and build their brackets online.

Editor’s note: This story was updated at 10:50 a.m. March 18 to clarify Principal Charity Classic is the host of the bracket challenge.