Katie Boulter loses to Katerina Siniakova in straight sets in semi-finals of Japan Open

Katie Boulter lost 6-1 6-4 to Katerina Siniakova in the semi-finals of the Japan Open.

Boulter had reached her third WTA semi-final of the 2026 season and has reclaimed her place as British No 1 from Sonay Kartal.

But her run came to an end in Osaka ... [1154 chars]

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