Katie Boulter vs Katerina Siniakova prediction: Katerina Siniakova narrow favourite at 52.5%
Katerina Siniakova is our pick at 52.5% to beat Katie Boulter in the semifinal of the Kinoshita Group Japan Open.
Katie Boulter is world No. 8 and Katerina Siniakova is unranked in ESPN's list. On hard courts our ratings put Katie Boulter at 1791 and Katerina Siniakova at 1813.
Katie Boulter has won 4 of 6 recent matches in our records, and Katerina Siniakova has won 4 of 6 recent matches in our records. On hard since 2024 (latest 30 matches): Katie Boulter 17-13, Katerina Siniakova 17-13.
They have met 1 time since 2024 in our data, with Katie Boulter winning 1 and Katerina Siniakova 0. The latest was at the Mutua Madrid Open, won by Katie Boulter.