Prediction Katie Boulter – Katerina Siniakova: analysis, odds and forecast

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MARCELITOSports predictions

This content was machine-translated from the French version.

GBRNo.48 WTA

Kinoshita Group Japan Open

Final

Semi-finalWomen’s singles

Hard

Saturday, 24 October 2026 · 09:50

Osaka

CZENo.49 WTA

Marcelito predictionWon

Katerina Siniakova

Match winner

Observed odds1.56

Win probability

60%

Operator odds are not available right now

Prediction summary

Prediction: Katerina Siniakova · Match winner. Estimated probability: 60.1 %, based on market odds. No stake: this probability does not justify a bet at the available odds.

See more details

Comparative statistics

BoulterSiniakova

World rankingNo.48No.49
Ranking points1,1151,114
Win rate (career)60 %58 %
Wins (career)370426
Titles46

Detailed analysis

The tournament is presented as a WTA 500 held from 19 to 25 October 2026 on outdoor hard courts, in singles and doubles, with a 28-player singles draw. The singles semifinals are scheduled for 24 October. However, Boulter and Siniakova's presence in this draw is not confirmed; the level of opposition, actual round, and previous performances therefore cannot be contextualized.Read the full analysis

Recent form

However, Boulter and Siniakova's presence in this draw is not confirmed; the level of opposition, actual round, and previous performances therefore cannot be contextualized.

Head-to-head

No recent head-to-head between the two players is documented for this event. No previous match reliably attributable to Boulter or Siniakova in the 2026 edition of Ningbo can be provided with opponent, date, and set-by-set score.

Histories from another edition or another competition do not help clarify this matchup.

Line-up and availability

For a singles match, no team lineup applies. The actual presence of Katie Boulter and Katerina Siniakova in the 2026 Ningbo Open draw is not confirmed; the schedule must therefore be confirmed along with the event identity.

Market reading

Prediction: Katerina Siniakova · Match winner. Estimated probability: 60.1 %, based on market odds. No stake: this probability does not justify a bet at the available odds.

Recent form

Katie Boulter3 W - 2 L

23 Oct 2026vs Antonia Ruzic3-6 6-3 6-3W
21 Oct 2026vs Viktorija Golubic6-2 6-1W
20 Oct 2026vs Himeno Sakatsume6-3 6-1W
13 Oct 2026vs Diana Shnaider3-6 1-6L
02 Oct 2026vs Karolina Muchova6-7(3) 1-6L

Katerina Siniakova3 W - 2 L

23 Oct 2026vs Mary Stoiana6-1 6-2W
22 Oct 2026vs Magda Linette6-4 6-1W
20 Oct 2026vs Peyton Stearns6-4 0-6 4-0W
13 Oct 2026vs Liudmila Samsonova1-6 7-5 2-6L
03 Oct 2026vs Elina Svitolina6-1 4-6 2-6L

Surface & conditions

Kinoshita Group Japan OpenHard

Speed: Medium
Bounce: Medium
Court: Center

WTA ranking

#	Player	Points
46	Barbora Krejcikova	1,133
47	Janice Tjen	1,120
48	Katie Boulter	1,115
49	Katerina Siniakova	1,114
50	Magdalena Frech	1,110
51	Karolina Pliskova	1,105

See the full ranking

1	Elena Rybakina	9,501
2	Aryna Sabalenka	7,550
3	Mirra Andreeva	6,306
4	Jessica Pegula	6,225
5	Coco Gauff	5,973
6	Elina Svitolina	5,229
7	Karolina Muchova	4,725
8	Iga Swiatek	4,389
9	Linda Noskova	4,353
10	Marta Kostyuk	3,920
11	Maja Chwalinska	3,016
12	Iva Jovic	2,941
13	Diana Shnaider	2,798
14	Elise Mertens	2,540
15	Victoria Mboko	2,393
16	Sorana Cirstea	2,386
17	Amanda Anisimova	2,363
18	Naomi Osaka	2,287
19	Alexandra Eala	2,241
20	Belinda Bencic	2,222
21	Madison Keys	2,029
22	Zheng Qinwen	2,018
23	Leylah Fernandez	1,974
24	Marie Bouzkova	1,959
25	Anna Kalinskaya	1,935
26	Jelena Ostapenko	1,916
27	Anastasia Potapova	1,814
28	Emma Navarro	1,794
29	Nikola Bartunkova	1,711
30	Maria Sakkari	1,682
31	Ann Li	1,681
32	Sara Bejlek	1,633
33	Ekaterina Alexandrova	1,591
34	Diane Parry	1,549
35	Jasmine Paolini	1,512
36	Donna Vekic	1,333
37	Peyton Stearns	1,316
38	Talia Gibson	1,306
39	Wang Xinyu	1,288
40	Daria Snigur	1,280
41	Kimberly Birrell	1,280
42	Cristina Bucsa	1,279
43	Liudmila Samsonova	1,234
44	Ashlyn Krueger	1,233
45	Hailey Baptiste	1,153
46	Barbora Krejcikova	1,133
47	Janice Tjen	1,120
48	Katie Boulter	1,115
49	Katerina Siniakova	1,114
50	Magdalena Frech	1,110
51	Karolina Pliskova	1,105
52	Sonay Kartal	1,097
53	Lilli Tagger	1,091
54	Yuliia Starodubtseva	1,090
55	Anhelina Kalinina	1,087
56	Mayar Sherif	1,085
57	Lanlana Tararudee	1,083
58	Clara Tauson	1,074
59	Tamara Korpatsch	1,070
60	Elena-Gabriela Ruse	1,033
61	Paula Badosa	1,023
62	Oleksandra Oliynykova	1,022
63	Catherine McNally	999
64	Zeynep Sonmez	987
65	Alycia Parks	985
66	Kamilla Rakhimova	976
67	Yulia Putintseva	969
68	Camila Osorio	953
69	Elisabetta Cocciaretto	951
70	Tatjana Maria	945
71	Magda Linette	936
72	Maria Timofeeva	931
73	Anna Blinkova	921
74	Viktorija Golubic	914
75	Daria Kasatkina	913
76	Anna Bondar	913
77	Sinja Kraus	909
78	Panna Udvardy	899
79	Alina Korneeva	895
80	Mananchaya Sawangkaew	886
81	Katie Volynets	874
82	Wang Xiyu	869
83	Jaqueline Cristian	869
84	Antonia Ruzic	862
85	Taylah Preston	858
86	Kaitlin Quevedo	855
87	Tereza Valentova	853
88	Petra Marcinko	835
89	Taylor Townsend	831
90	Leolia Jeanjean	816
91	Polina Kudermetova	813
92	Darja Vidmanova	812
93	Zhang Shuai	807
94	Maya Joint	782
95	Renata Zarazua	782
96	Jessica Bouzas Maneiro	769
97	Dayana Yastremska	752
98	Francesca Jones	752
99	Fiona Ferro	748
100	Alina Charaeva	736
101	Solana Sierra	730
102	Lisa Pigato	719
103	Hanne Vandewinkel	718
104	Emma Raducanu	709
105	Anastasia Zakharova	704
106	Katarzyna Kawa	701
107	Kristina Liutova	694
108	Dominika Salkova	693
109	Claire Liu	691
110	McCartney Kessler	689
111	Elvina Kalieva	688
112	Aliaksandra Sasnovich	686
113	Mary Stoiana	673
114	Himeno Sakatsume	665
115	Harriet Dart	661
116	Laura Samson	658
117	Sloane Stephens	655
118	Lucrezia Stefanini	648
119	Kayla Day	635
120	Oksana Selekhmeteva	633
121	Moyuka Uchijima	632
122	Julia Grabher	625
123	Tatiana Prozorova	615
124	Jeline Vandromme	601
125	Marina Bassols Ribera	587
126	Noma Noha Akugue	582
127	Emerson Jones	581
128	Simona Waltert	580
129	Bianca Andreescu	573
130	Maddison Inglis	570
131	Leyre Romero Gormaz	570
132	Lucia Bronzetti	560
133	Alexandra Shubladze	548
134	Ajla Tomljanovic	546
135	Elsa Jacquemot	544
136	Veronika Podrez	532
137	Andrea Lazaro Garcia	525
138	Guiomar Maristany Zuleta De Reales	519
139	Elizara Yaneva	517
140	Julia Riera	514
141	Tamara Zidansek	513
142	Rebecca Sramkova	507
143	Teodora Kostovic	506
144	Mia Pohankova	504
145	Elina Avanesyan	498
146	Storm Hunter	492
147	Polina Iatcenko	490
148	Martyna Kubka	490
149	Susan Bandecchi	487
150	Robin Montgomery	485

Players & profiles

No.48 WTA

Age: 30 years
Height: 1,83 m
Weight: 65 kg
Plays: Right-handed
Born in: Leicester, Great Britain

No.49 WTA

Age: 30 years
Height: 1,75 m
Weight: 69 kg
Plays: Right-handed
Born in: Hradec Kralove, Czech Republic

Career record

	Boulter	Siniakova
2026 season · W / L	25 - 21	23 - 19
Wins / Losses	370 - 246	426 - 305
Win rate	60 %	58 %
Titles 2026	1	1
Titles	4	6

Keys to the match

Scenario 1: the match is genuinely scheduled, because the date falls within the announced semifinal window of the tournament.
Scenario 2: the metadata is incorrect, which appears plausible since the official draw contains neither Boulter nor Siniakova and shows four other quarterfinals.
In both cases, no reliable path to victory or tactical matchup can be established before confirmation of the competition, edition, draw, and round.

Players & fitness

No official information links Boulter or Siniakova to this specific match.
Their physical condition, any potential fatigue, and their serving or returning statistics cannot be assessed.
Polina Kudermetova's injury retirement concerns another player and is not relevant to this pairing.

Alerts & record

Create a selection alert Our predictions are settled publicly — view the record

A probability is never a guarantee of outcome. If you bet, only wager what you can afford to lose.

Analyses are generated by our model and guarantee no outcome. Please gamble responsibly.

Loading match details…

This content was machine-translated from the French version.

GBRNo.48 WTA

Kinoshita Group Japan Open

Final

Semi-finalWomen’s singles

Hard

Saturday, 24 October 2026 · 09:50

Osaka

CZENo.49 WTA

Marcelito predictionWon

Katerina Siniakova

Match winner

Observed odds1.56

Win probability

60%

Operator odds are not available right now

Prediction summary

Prediction: Katerina Siniakova · Match winner. Estimated probability: 60.1 %, based on market odds. No stake: this probability does not justify a bet at the available odds.

See more details

Comparative statistics

BoulterSiniakova

World rankingNo.48No.49
Ranking points1,1151,114
Win rate (career)60 %58 %
Wins (career)370426
Titles46

Detailed analysis

Recent form

However, Boulter and Siniakova's presence in this draw is not confirmed; the level of opposition, actual round, and previous performances therefore cannot be contextualized.

Head-to-head

Histories from another edition or another competition do not help clarify this matchup.

Line-up and availability

Market reading

Prediction: Katerina Siniakova · Match winner. Estimated probability: 60.1 %, based on market odds. No stake: this probability does not justify a bet at the available odds.

Recent form

Katie Boulter3 W - 2 L

23 Oct 2026vs Antonia Ruzic3-6 6-3 6-3W
21 Oct 2026vs Viktorija Golubic6-2 6-1W
20 Oct 2026vs Himeno Sakatsume6-3 6-1W
13 Oct 2026vs Diana Shnaider3-6 1-6L
02 Oct 2026vs Karolina Muchova6-7(3) 1-6L

Katerina Siniakova3 W - 2 L

23 Oct 2026vs Mary Stoiana6-1 6-2W
22 Oct 2026vs Magda Linette6-4 6-1W
20 Oct 2026vs Peyton Stearns6-4 0-6 4-0W
13 Oct 2026vs Liudmila Samsonova1-6 7-5 2-6L
03 Oct 2026vs Elina Svitolina6-1 4-6 2-6L

Surface & conditions

Kinoshita Group Japan OpenHard

Speed: Medium
Bounce: Medium
Court: Center

WTA ranking

#	Player	Points
46	Barbora Krejcikova	1,133
47	Janice Tjen	1,120
48	Katie Boulter	1,115
49	Katerina Siniakova	1,114
50	Magdalena Frech	1,110
51	Karolina Pliskova	1,105

See the full ranking

1	Elena Rybakina	9,501
2	Aryna Sabalenka	7,550
3	Mirra Andreeva	6,306
4	Jessica Pegula	6,225
5	Coco Gauff	5,973
6	Elina Svitolina	5,229
7	Karolina Muchova	4,725
8	Iga Swiatek	4,389
9	Linda Noskova	4,353
10	Marta Kostyuk	3,920
11	Maja Chwalinska	3,016
12	Iva Jovic	2,941
13	Diana Shnaider	2,798
14	Elise Mertens	2,540
15	Victoria Mboko	2,393
16	Sorana Cirstea	2,386
17	Amanda Anisimova	2,363
18	Naomi Osaka	2,287
19	Alexandra Eala	2,241
20	Belinda Bencic	2,222
21	Madison Keys	2,029
22	Zheng Qinwen	2,018
23	Leylah Fernandez	1,974
24	Marie Bouzkova	1,959
25	Anna Kalinskaya	1,935
26	Jelena Ostapenko	1,916
27	Anastasia Potapova	1,814
28	Emma Navarro	1,794
29	Nikola Bartunkova	1,711
30	Maria Sakkari	1,682
31	Ann Li	1,681
32	Sara Bejlek	1,633
33	Ekaterina Alexandrova	1,591
34	Diane Parry	1,549
35	Jasmine Paolini	1,512
36	Donna Vekic	1,333
37	Peyton Stearns	1,316
38	Talia Gibson	1,306
39	Wang Xinyu	1,288
40	Daria Snigur	1,280
41	Kimberly Birrell	1,280
42	Cristina Bucsa	1,279
43	Liudmila Samsonova	1,234
44	Ashlyn Krueger	1,233
45	Hailey Baptiste	1,153
46	Barbora Krejcikova	1,133
47	Janice Tjen	1,120
48	Katie Boulter	1,115
49	Katerina Siniakova	1,114
50	Magdalena Frech	1,110
51	Karolina Pliskova	1,105
52	Sonay Kartal	1,097
53	Lilli Tagger	1,091
54	Yuliia Starodubtseva	1,090
55	Anhelina Kalinina	1,087
56	Mayar Sherif	1,085
57	Lanlana Tararudee	1,083
58	Clara Tauson	1,074
59	Tamara Korpatsch	1,070
60	Elena-Gabriela Ruse	1,033
61	Paula Badosa	1,023
62	Oleksandra Oliynykova	1,022
63	Catherine McNally	999
64	Zeynep Sonmez	987
65	Alycia Parks	985
66	Kamilla Rakhimova	976
67	Yulia Putintseva	969
68	Camila Osorio	953
69	Elisabetta Cocciaretto	951
70	Tatjana Maria	945
71	Magda Linette	936
72	Maria Timofeeva	931
73	Anna Blinkova	921
74	Viktorija Golubic	914
75	Daria Kasatkina	913
76	Anna Bondar	913
77	Sinja Kraus	909
78	Panna Udvardy	899
79	Alina Korneeva	895
80	Mananchaya Sawangkaew	886
81	Katie Volynets	874
82	Wang Xiyu	869
83	Jaqueline Cristian	869
84	Antonia Ruzic	862
85	Taylah Preston	858
86	Kaitlin Quevedo	855
87	Tereza Valentova	853
88	Petra Marcinko	835
89	Taylor Townsend	831
90	Leolia Jeanjean	816
91	Polina Kudermetova	813
92	Darja Vidmanova	812
93	Zhang Shuai	807
94	Maya Joint	782
95	Renata Zarazua	782
96	Jessica Bouzas Maneiro	769
97	Dayana Yastremska	752
98	Francesca Jones	752
99	Fiona Ferro	748
100	Alina Charaeva	736
101	Solana Sierra	730
102	Lisa Pigato	719
103	Hanne Vandewinkel	718
104	Emma Raducanu	709
105	Anastasia Zakharova	704
106	Katarzyna Kawa	701
107	Kristina Liutova	694
108	Dominika Salkova	693
109	Claire Liu	691
110	McCartney Kessler	689
111	Elvina Kalieva	688
112	Aliaksandra Sasnovich	686
113	Mary Stoiana	673
114	Himeno Sakatsume	665
115	Harriet Dart	661
116	Laura Samson	658
117	Sloane Stephens	655
118	Lucrezia Stefanini	648
119	Kayla Day	635
120	Oksana Selekhmeteva	633
121	Moyuka Uchijima	632
122	Julia Grabher	625
123	Tatiana Prozorova	615
124	Jeline Vandromme	601
125	Marina Bassols Ribera	587
126	Noma Noha Akugue	582
127	Emerson Jones	581
128	Simona Waltert	580
129	Bianca Andreescu	573
130	Maddison Inglis	570
131	Leyre Romero Gormaz	570
132	Lucia Bronzetti	560
133	Alexandra Shubladze	548
134	Ajla Tomljanovic	546
135	Elsa Jacquemot	544
136	Veronika Podrez	532
137	Andrea Lazaro Garcia	525
138	Guiomar Maristany Zuleta De Reales	519
139	Elizara Yaneva	517
140	Julia Riera	514
141	Tamara Zidansek	513
142	Rebecca Sramkova	507
143	Teodora Kostovic	506
144	Mia Pohankova	504
145	Elina Avanesyan	498
146	Storm Hunter	492
147	Polina Iatcenko	490
148	Martyna Kubka	490
149	Susan Bandecchi	487
150	Robin Montgomery	485

Players & profiles

No.48 WTA

Age: 30 years
Height: 1,83 m
Weight: 65 kg
Plays: Right-handed
Born in: Leicester, Great Britain

No.49 WTA

Age: 30 years
Height: 1,75 m
Weight: 69 kg
Plays: Right-handed
Born in: Hradec Kralove, Czech Republic

Career record

	Boulter	Siniakova
2026 season · W / L	25 - 21	23 - 19
Wins / Losses	370 - 246	426 - 305
Win rate	60 %	58 %
Titles 2026	1	1
Titles	4	6

Keys to the match

Scenario 1: the match is genuinely scheduled, because the date falls within the announced semifinal window of the tournament.
Scenario 2: the metadata is incorrect, which appears plausible since the official draw contains neither Boulter nor Siniakova and shows four other quarterfinals.
In both cases, no reliable path to victory or tactical matchup can be established before confirmation of the competition, edition, draw, and round.

Players & fitness

No official information links Boulter or Siniakova to this specific match.
Their physical condition, any potential fatigue, and their serving or returning statistics cannot be assessed.
Polina Kudermetova's injury retirement concerns another player and is not relevant to this pairing.

Alerts & record

Create a selection alert Our predictions are settled publicly — view the record

A probability is never a guarantee of outcome. If you bet, only wager what you can afford to lose.

Analyses are generated by our model and guarantee no outcome. Please gamble responsibly.