Beatriz Haddad Maia pulled double duty to beat the Kudermetova sisters in back-to-back singles matches at the Korea Open on Saturday, reaching the final to face top-seeded Daria Kasatkina. The quarterfinals and semifinals were played on the same day because rain washed out all action Friday.

A foot injury forced Emma Raducanu to retire from the Korea Open quarter-finals on Saturday, while third seed Beatriz Haddad Maia beat sisters Polina and Veronika Kudermetova on the same day to set up a Korea Open final clash with top seed Daria Kasatkina.

Beatriz Haddad Maia advanced to the rain-delayed semifinals of the Korea Open with a 6-2, 6-1 win over Polina Kudermetova on Saturday. The Brazilian was the 2017 runner-up in the Seoul WTA 500-level tournament.

Emma Raducanu made her first retirement of the season at the Korea Open in Seoul on Saturday. Suffering from pain in her left foot, she pulled out of her quarter-final against top seed Daria Kasatkina while trailing 6-1.

Daria Kasatkina (No. 13 ranking) will face Emma Raducanu (No. 70) in the quarterfinals at the Hana Bank Korea Open on Saturday, September 21. Watch Tennis Channel by subscribing to Fubo today. In terms of serve/return winning percentages over her last 10 tournaments, Kasatkina has won 61.3% of her games on serve, and 45.6% on return.

A foot injury forced Emma Raducanu to retire from the Korea Open quarter-finals on Saturday, while third seed Beatriz Haddad Maia beat sisters Polina and Veronika Kudermetova on the same day to set up a Korea Open final clash with top seed Daria Kasatkina.

British number two Emma Raducanu retires from her Korea Open quarter-final against Daria Kasatkina with a foot injury.

Emma Raducanu's injury problems struck again as she retired from her Korea Open quarter-final against top seed Daria Kasatkina.

Raducanu initially called the trainer at 4-1 down and received some treatment, though ultimately decided to end the match after dropping the opening set to the world No 13. It is