Oklahoma sheriff deputy Erik Gransberg was at high school fundraiser . For stunt he ran across the court and jumped on a trampoline before twisting into the air and throwing basketball to the ground . A student followed behind him and grabbed the ball before dunking it . An excited Gransberg then did a backflip as the crowd went wild . Gransberg was once part of the acrobatic dunk team Swine Week for the Oklahoma City Thunder .
Oklahoma sheriff deputy Erik Gransberg was at high school fundraiser . For stunt he ran across the court and jumped on a trampoline before twisting into the air and throwing basketball to the ground . A student followed behind him and grabbed the ball before dunking it . An excited Gransberg then did a backflip as the crowd went wild . Gransberg was once part of the acrobatic dunk team the 'Thunder Bolts ' for the Oklahoma City Thunder .