Sayaka Ishii vs Rira Kosaka — W50 Nanao Qualifying Round of 16

W50 Nanao · ITF · Qualifying Round of 16
JPNQ
Sayaka Ishii
#739WTA
1387ELO
$39kYTD
$236kCAREER
21 yrs
Last 10 · pre-match
LWWLLWLWWL
2 — 0
Sets
Tuesday, 22 September 2026 ·
carpet
JPN
Rira Kosaka
#1502WTA
18 yrs
Last 10 · pre-match
WLWWWWLWLL
Ishii S.
6-3 6-1
Kosaka R.
Ishii S.
662
Kosaka R.
310

Sayaka Ishii defeated Rira Kosaka 6-3, 6-1 in the qualifying round 1 of the W50 Nanao tournament on carpet. Ishii hit one ace and two double faults, while converting all her break points and winning one service break. Kosaka did not record an ace or convert any break points.

Generated automatically from Umpiry match data.

Momentum · Final
Ishii S.9/9
Kosaka R.4/9

hold to 0/15to 30to 40 / deucebroken

Key context

Head to head

No previous meetings on record.

Statistics

This season
Ishii S.Kosaka R.
1st serve in·Even
58%
54%
1st serve points won·Slight edge
64%
54%
2nd serve points won·Even
41%
45%
Service points won·Even
54%
50%
Return points won·Even
42%
44%
Break points saved·Even
47%
47%
Aces / match·Clear edge
2.2
0.3
Double faults / match·Slight edge
6.3
6.7

Averages over each player's completed matches in the selected window (23 vs 3). ATP, WTA & Challenger.

Umpiry Score

Pre-match
Ishii S.
5.2
Clear underdogUmpiry ScorePartial · surface data limited
Kosaka R.
4.2
Heavy underdogUmpiry ScorePartial · surface data limited
  • Back-to-back day (−0.5)
Form & Matchup
5.0No prior meetings
H2H
5.0No prior meetings
0.0Lost last 6
Win streak
0.0Lost last 2
Fatigue & Travel
8.0Hard → Carpet
Surface transition
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.

Conditions

Weather
25°CMainly clear
Wind 12 km/hHumidity 58%

Draw