On March 5 in Cut Bank, Mont., Isaiah Martin, a 5-foot-11 senior guard for Harlem's boys basketball team, dunked during warmups for a high school tournament game with Shelby.
There was a shower of glass as the backboard shattered.
Harlem had to forfeit the game.
According to the Montana High School Association, dunking is not allowed in pregame warmups in tournament play. If a backboard is damaged by a pregame dunk, the offending school must forfeit. The rule was put in 10 years ago.