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Katie Boulter vs Viktorija Golubic — Japan Open - Osaka Round of 16

Japan Open - OsakaR16HardWed 21 Oct · ~14:00Center · After 2 matches
Win probabilityWho is more likely to winToss-up
54%46%

No meaningful edge. Serve performance in the first set is the likeliest tiebreaker.

Umpiry ScoreMatchup strength, 0–10 · not a probability
Boulter K.6.0/10
Even match
Golubic V.5.8/10
Slight disadvantage
Why
Surface+75 Hard Elo edgeSupports Boulter K.
Overall ratingOverall Elo 1831Supports Boulter K.
Head-to-headTrails 1–2 on hardSupports Boulter K.
Long matches1 three-setter in 14 daysSupports Boulter K.
This eventDidn't play here last yearBoth players
ELO1 867
Hard ELO1 745
Last 104–6
Age30
Height180 cm
PlaysRight
EarningsCareer $5.0M2026 $1.0M
ELO1 865
Hard ELO1 716
Last 105–5
Age34
Height169 cm
PlaysRight
EarningsCareer $5.8M2026 $949K

Katie Boulter faces Viktorija Golubic in the Japan Open - Osaka round of 16 on hard. Katie Boulter holds the paper edge — ranked #58, a roughly 70-point hard Elo advantage. Recent hard form is closely matched. They have met 4 times, the series level at 2–2, Viktorija Golubic ahead 2–1 on hard.

Key context

Common opponents

5 shared · last 12 months

Boulter K. and Golubic V. faced 5 of the same opponents in the last 12 months. Boulter K. went 3–4 (43%) against them, Golubic V. 2–4 (33%). Results against comparable opponents are close (1 : 1 better-results split).

3–443%Boulter K. · better vs 1Record vs common opponents2–433%Golubic V. · better vs 1
Vs common opponents · derived from scorelines
7–9Sets5–9
67–75Games64–69
0–1Tiebreaks0–2
1–1Deciding sets1–1
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Head-to-head

4 meetings · level 2–2
22

Hard: Golubic V. leads 2–1 · Grass: Boulter K. leads 1–0

Evidence

Boulter K.Golubic V.
FormLast 10 matches each · 2026
Win–loss4–65–5 (ahead)
Season win rate53% (24–21)55% (29–24) (ahead)
RatingUmpiry ELO
Overall ELO1867 (ahead)1865
Hard-court ELO1745 (ahead)1716
Serve vs returnLast 42 vs 51 matches
1st-serve points won66% (ahead)59%
Return points won43%47% (ahead)
Aces / match2.4 (ahead)0.9
ClutchLast 42 vs 51 matches
Break points saved54%55% (ahead)

When it starts

Center · After 2 matches · Followed by

Draw

Odds

Conditions

Center · ~14:00 local
SurfaceHard
Forecast27°C · Clear
Wind12 km/h
Humidity75%

Freshness

Last 7 & 14 days
Boulter K.Golubic V.
7 — fresherDays since last match1
1Matches · 7 days1
16Games · 7 days16
1 — fresherMatches · 14 days2
16 — fresherGames · 14 days49
Green marks the fresher player.

Cite this

Umpiry, "Katie Boulter vs Viktorija Golubic — Japan Open - Osaka Round of 16", https://umpiry.com/match/2026-10-21/boulter-vs-golubic-japan-open-osaka-r16?utm_source=cite (as of 21 October 2026).