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

The news of world No. 1 tennis star Jannik Sinner's improbable defeat at Roland Garros continues to send shock waves through the sports world, as the four-time Grand Slam champion was upended in the second round of the French Open.

Not only was he heavily favored to win the whole thing, he was up two sets to none and was winning a decisive third set 5-1 before choking the lead away in five sets, spoiling a 30-match win streak.

Sinner's clay-court catastrophe will be remembered as one of the biggest tennis upsets of all time...