Five of the most shocking upsets in sports history, from Michigan-App State to Virginia-UMBC

The article discusses major sports upsets including Jannik Sinner's second-round French Open loss after a two-set lead, Novak Djokovic's 2017 Australian Open exit to Denis Istomin, and the Golden State Warriors' NBA Finals collapse against the Cleveland Cavaliers. It highlights how top-ranked athletes and teams faced unexpected defeats.