The abbreviated 2020 season was full of the unexpected, both on and off the court, and there were results that shocked fans and players alike. Let's take a look at the Top 10 biggest upsets of 2020.


Iga Swiatek def. Simona Halep

Setting: Roland Garros, fourth round

Rankings: Swiatek, No. 54 vs. Halep, No. 1

Score: 6-1, 6-2

Before facing Simona Halep in the fourth round at the French Open, Iga Swiatek was carving her way through the tournament. Many expected the 19-year-old's journey was coming to an end against the world No. 1, especially since she had won just one game against Halep in Paris last year. 

Instead, Swiatek converted four break points to allow Halep just three games. It was a dominate performance that stunned the Romanian. The Pole used the momentum to continue her way to the championship without losing a set.

This was Halep's lowest-ranked loss in Paris since falling to a No. 70-ranked Mirjana Lucic-Baroni in 2015.