Kazakhstan's Elena Rybakina has withdrawn from the WTA Finals before the tournament begins, prompting organizers to name Ukraine's Marta Kostyuk as her replacement. Rybakina's withdrawal follows her exit from a women's singles quarterfinal at the Pan Pacific Open in Tokyo on October 30, 2026. The WTA Finals, the season-ending championship for the top eight singles players and doubles teams, will proceed with Kostyuk stepping into the draw.
Elena Rybakina Withdraws Ahead of WTA Finals; Marta Kostyuk Named Replacement
