Reigning champion Sofia Kenin crashed out of the Australian Open in the second round on Thursday, slumping to a 6-3, 6-2 defeat at the hands of world number 65 Kaia Kanepi on Margaret Court Arena.
The 22-year-old, who followed her Grand Slam breakthrough at Melbourne Park last year with a run to the final at the French Open, sprayed 22 unforced errors in the 64-minute contest against the experienced Estonian.
Kenin has been reduced to tears on court on several occasions since she came out of quarantine in Melbourne and admitted she has been struggling to contain her nerves at the prospect of defending the title.