New British number one Katie Boulter loses 6-1 6-4 to Czech doubles specialist Katerina Siniakova in the Japan Open semi-finals.
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New British number one Katie Boulter loses 6-1 6-4 to Czech doubles specialist Katerina Siniakova in the Japan Open semi-finals.

New British number one Katie Boulter loses 6-1 6-4 to Czech doubles specialist Katerina Siniakova in the Japan Open semi-finals.