Russia-born Australian tennis player Daria Kasatkina says she's ending the season early for the sake of her mental wellbeing after hitting "breaking point" on tour.

Brazil's Beatriz Haddad Maia won the fourth title of her career with a furious fightback to beat Russian top seed Daria Kasatkina 1-6, 6-4, 6-1 in Sunday's Korea Open final.

Elena Rybakina secured her second title of the season with a smooth 6-1, 6-4 victory over Daria Kasatkina at the Abu Dhabi Open.

Ukraine's Elina Svitolina continued her dominance of Daria Kasatkina, taking her career record over the Russian to 8-0 with a 6-2, 6-2 victory on Wednesday

WTA Finals: Iga Swiatek opened her season-ending WTA Finals campaign Tuesday with a straight sets victory over Russia's Daria Kasatkina.

Russian world number 12 tennis star Daria Kasatkina criticised her country's attitude towards homosexuality in a video published on Monday as she announced she was a lesbian.