Katerina Siniakova clinches a record sixth year-end WTA No. 1 doubles finish

(AP) — Katerina Siniakova has clinched her record sixth year-end finish as the world's top-ranked doubles player on the WTA Tour.She will have held the top spot for 209 weeks as of Monday, leaving her second all-time behind Hall of Famer and fellow Czech Republic native Martina Navratilova, who was

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