However, Spencer upsets and angers them repeatedly and they threaten to find him. Her victory was immediately declared one of the biggest upsets in UFC history. However, a sudden abnormality upsets this scenario. Truman's victory is considered to be one of the greatest election upsets in American history. Denver defeating Green Bay was one of the biggest upsets in NFL history. Tyson would go on to lose in one of the biggest upsets in boxing history. This upsets both fathers, threatening to affect Dorrit's position. Nobody likes the critic because he upsets things, and forces you to think. This news upsets her, despite having already packed. This deception upsets Gray and destroys their friendship. This upsets John, who storms off. The fight is widely considered one of the biggest upsets in sports history. This game is notable as one of the biggest upsets in Razorback football history. Ford defeated incumbent Elizabeth Brown in what was considered one of several upsets in Etobicoke. It is considered one of the biggest upsets in NASCAR history.