French Open records biggest upset

Kimberley Birrel has caused the biggest upset at the ongoing French Open. 

Down 1-6 in the first set against number 5 seed Jessica Pegula, she took the second set 6-3, had a two break advantage to lead 5-2, but got broken immediately to leave the score at 5-3 before breaking Pegula to win the set at 6-3. 

Birrel is ranked 83 in the world, but number five seed Jessica Pegula out in the first round, no thanks to the Australian.