In cricket, an upset refers to a situation where a team that was not expected to win, defeats a team that was considered the favorite. Upsets can be thrilling and unexpected, and they are often remembered as historic moments in the sport. Some of the biggest upsets in cricket history include Afghanistans victory over England in the 2023 World Cup, Zimbabwes defeat of Australia in the 1983 World Cup, and Bangladeshs win over Pakistan in the 1999 World Cup. Upsets can occur in any match, and they can be caused by a variety of factors, such as a strong performance by an underdog team, a poor performance by a favorite team, or unexpected events during the match.