Nao Hibino vs Anna SiskovaUS Open Qualifying Round of 64

US Open · WTA · Qualifying Round of 64
#227WTA
1560ELO
1523Hard ELO
31 yrs · 163 cm · Right-handed
Last 10 · pre-match
LWLWLLWLWL
2 — 0
Sets
Wednesday, 26 August 2026 ·
hard
Court 8 · 3rd on
#207WTA
1555ELO
1530Hard ELO
25 yrs
Last 10 · pre-match
WLWWWWWWWL
Hibino N.
6-4 6-2
Siskova A.
Hibino N.
662
Siskova A.
420

Nao Hibino defeated Anna Siskova 6-4, 6-2 in the qualifying 64 round of the US Open. Hibino converted 57% of her break points and won 69% of her first-serve points to secure the win. She broke Siskova's serve four times, while Siskova managed only one service break.

Key context

Head to head

No previous meetings on record.

Statistics

This season
1st serve in·Even
68%
67%
1st serve points won·Even
63%
63%
2nd serve points won·Even
48%
44%
Service points won·Even
58%
57%
Return points won·Slight edge
44%
49%
Break points saved·Slight edge
61%
55%
Aces / match·Even
2.5
2.2
Double faults / match·Slight edge
2.6
3.0

Averages over each player's completed matches in the selected window (39 vs 37). ATP, WTA & Challenger.

Clutch

Under pressure
Clutch Rating·Even
24
25
Break points saved·Dominant
6
34
Break points won·Slight edge
86
94
Deciding sets·Clear edge
11
23
Tiebreaks·
79

Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About

Win Probability

Pre-match · updated 20:50 UTC
Hibino N.34%
Siskova A.66%
Toss-up
50–58%
Slight edge
58–67%
Clear favourite
67–80%
Strong favourite
80%+

Slight edge · Siskova A. narrowly ahead

Calibrated model · 65% favourite accuracy (2025–26, out-of-sample). Probability is a statistical estimate, not a certainty. How it works.

Umpiry Score

Pre-match
6.1
Even matchUmpiry Score
6.7
Slight advantageUmpiry Score
Form & Matchup
4.9Hard Elo 1523
Surface ELO
5.1+6 Hard Elo edge
5.1Overall Elo 1560
ELO gap
4.9Overall Elo 1555
5.0No prior meetings
H2H
5.0No prior meetings
4.34 of last 10 on hard
Surface form
8.99 of last 10 on hard
Fatigue & Travel
3-set count
7.01 three-setter in 14 days
Context
5.0Didn't play here last year
Defending pts
5.0Didn't play here last year

The Umpiry Score combines match-context factors — matchup, form, fatigue, travel and motivation — into a single 0–10 score, updated daily. Read how it works.

Freshness

Recent load
Freshness·Even
75
77

Hibino N.: 2 days rest · 3 matches, 54 games (7d) · Siskova A.: 2 days rest · 2 matches, 47 games (7d). Higher means fresher. About

Conditions

Court speed
Medium-fastrewards aggression
SlowFast
Weather
23°CClear
Wind 9 km/hHumidity 76%

Draw