Overview
- Elena Rybakina defeated substitute Ekaterina Alexandrova 6-4, 6-4 to finish 3-0 and win the Serena Williams group in Riyadh.
- Amanda Anisimova beat Iga Swiatek 6-7 (3), 6-4, 6-2 in a winner-takes-all match to claim the second semifinal spot from the group.
- Madison Keys withdrew with a viral illness after two losses and earlier signaled she was unwell by skipping post-match handshakes.
- Because Mirra Andreeva did not sign in and was not fit to play, Alexandrova made her WTA Finals debut as the on-site second alternate.
- Rybakina and Anisimova advance to Friday’s semifinals and await opponents from the Stefanie Graf group, which concludes on Thursday.