Brendan Sorsby bet more than $90,000 on games while he quarterbacked the football teams at Indiana University and the University of Cincinnati. Court records show that he began gambling in high school at casinos with friends and started experimenting with sports-betting apps that allowed him to make wagers on his phone before he was even 21—the legal age. Sorsby said he was enticed by introductory offers that allowed him to deposit a few dollars and receive hundreds in free betting credits.