Daria Kasatkina is a former world number eight in singles
World number 19 Daria Kasatkina says she is at "breaking point" and has ended her season early, describing the schedule as "too much, mentally and emotionally".
The 28-year-old switched nationality from Russia to Australia in March, having criticised her country's LGBTQ+ laws and the war in Ukraine.
She struggled for form this year, failing to win a title and finishing with a 19-21 record.
Kasatkina said the emotional stress of her nationality switch contributed to her struggles, including not seeing her father for four years.
