BYU cheer coach, Jocelyn Allan, was struck by a water bottle and knocked unconscious during the celebration of their football team's 22-21 win over Utah on Saturday night. The incident occurred in the south end zone of Rice-Eccles Stadium, where Allan had been coaching.

Source: https://www.cbssports.com/college-football/news/byu-cheer-coach-says-she-was-hit-by-bottle-knocked-unconscious-after-football-teams-win-over-utah/