Katerina Siniakova won the Kinoshita Group Japan Open in Osaka on Sunday, beating Ashlyn Krueger 6-1, 6-0 in the final. The match lasted 64 minutes, according to Women's Tennis Association. Krueger entered the final at No. 55 with 1072 ranking points, and it was Krueger's first tour-level final of 2026. Siniakova arrived at No. 86 with 865 ranking points. From a 2-1 lead in the first set, Siniakova won 10 consecutive games, and Siniakova finished the week having dropped one set. It was Siniakova's sixth career singles title, and her first since she won in Nanchang in 2023.
How did the Japan Open final unfold?
Siniakova beat Krueger 6-1, 6-0 in the final of the Kinoshita Group Japan Open in Osaka. Siniakova took the first set 6-1 and closed the second set 6-0, leaving Krueger with one game in the first set and none in the second.
According to Women's Tennis Association, Siniakova won 10 consecutive games after a 2-1 lead in the first set, and the match never turned back toward Krueger from there, with Siniakova controlling the second set from start to finish.
Who won the Kinoshita Group Japan Open?
Katerina Siniakova won the Kinoshita Group Japan Open in Osaka, and the final decided the champion. According to The Morung Express, Siniakova defeated Peyton Stearns, Magda Linette, Mary Stoiana and Katie Boulter on the way to the title.
The Morung Express also reported that Siniakova finished the week having dropped one set, and the final added a 6-1, 6-0 win against Krueger to that run. Siniakova's name goes on the trophy as the Osaka champion, while Krueger finished as the runner-up.
How were Siniakova and Krueger ranked?
Krueger of the United States arrived in Osaka at No. 55 in the rankings with 1072 points. Siniakova of the Czech Republic stood lower on the list, at No. 86 with 865 points. On paper, the final matched the higher-ranked American against the lower-ranked Czech.
The gap in the standings meant little on court. Siniakova won 6-1, 6-0 in 64 minutes, according to Women's Tennis Association, and she ran off 10 consecutive games after a 2-1 lead in the first set. She hit 16 winners with 19 unforced errors, while Krueger finished with 10 winners and 34 unforced errors. Separate from those singles numbers, Siniakova's doubles ranking remains world No. 1.
What did the match statistics show?
According to Women's Tennis Association, Siniakova hit 16 winners and committed 19 unforced errors in the final. Krueger finished with 10 winners and 34 unforced errors.
The unforced error totals separated the players: Siniakova made 19 and Krueger made 34. In winners, Siniakova had 16 against 10 for Krueger, and the match ended 6-1, 6-0. Siniakova's 16 winners and 19 unforced errors sat close together, while Krueger's 10 winners and 34 unforced errors sat far apart in the final.
What did the week mean for Siniakova and Krueger?
The Morung Express reported that the Osaka title was Siniakova's first in singles since Nanchang 2023, and that Siniakova's 2026 finals also include Guangzhou and Indian Bowl. According to Women's Tennis Association, Siniakova's WTA finals record is now 6-5.
For Krueger, The Morung Express said the Japan Open final was the first tour-level final of 2026 and that Krueger won this event in 2023. Krueger's record in finals is now 1-2, according to the same outlet. Krueger's route went through Janice Tjen, Lanlana Tararudee, Talia Gibson and Ann Li.
The numbers at Scorely
| Player | Set 1 | Set 2 |
|---|---|---|
| Ashlyn Krueger | 1 | 0 |
| Katerina Siniakova | 6 | 6 |
| Stat | Ashlyn Krueger | Katerina Siniakova |
|---|---|---|
| WTA ranking | 55 | 86 |
| Ranking points | 1072 | 865 |
| Country | USA | CZE |
| Tournament | Round | Venue |
|---|---|---|
| Kinoshita Group Japan Open (WTA) | Final | Osaka |
Data source: ESPN; calculation and table by Scorely.













