Tennis players work for years to climb up the rankings.
But sometimes the form book can whizz right out of the window.
A hungry up-and-comer...a long-standing rival...a great reliving her glory years.
The prospect of lifting a trophy, or breaking a record, or representing one's country can inspire players to unexpected feats of achievement - so the best players in the game always need to be on their guard against a shock.
Check out our compilation of the Top 10 biggest upsets of the last decade!
![Sara Sorribes Tormo d. [WC] Gao Xinyu 6-7(4), 7-5, 7-5, Beijing R1 (4:15). Sorribes Tormo led 5-1 in the third set, and held off a late comeback attempt by Gao to win the fourth longest match of the Open Era.](https://photoresources.wtatennis.com/photo-resources/2024/09/26/f4607c83-dcf9-4897-9b41-90ae8c384a35/Sorribes-Tormo-R1-ST-2.jpg?width=451&height=268)
