R. Kosaka vs Ying Zhang — W15 Sapporo 2 Round of 16
W15 Sapporo 2 · ITF · Round of 16
JPNR. Kosaka
56 yrs
Last 10 · pre-match
LWLW
1 — 2
Sets
Thursday, 25 June 2026 ·
hard
Kosaka R.4-6 7-5 4-6
Zhang Y.
Kosaka R.
4741
Zhang Y.
6562
Ying Zhang defeated R. Kosaka 6-4, 5-7, 6-4 in the Round of 16 at the W15 Sapporo 2 tournament. Zhang converted 50% of her break points, while Kosaka converted 44%. The match saw Zhang commit 5 double faults and Kosaka commit 7.
Key context
- Match story: Ying Zhang edged a tight contest from start to finish — 6–4 5–7 6–4.
Head to head
No previous meetings on record.
Statistics
This seasonKosaka R.Zhang Y.
1st serve in·
—
63%
1st serve points won·
—
64%
2nd serve points won·
—
37%
Service points won·
—
54%
Return points won·
—
40%
Break points saved·
—
57%
Aces / match·
—
1.9
Double faults / match·
—
4.2
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.
Umpiry Score
Pre-matchKosaka R.
5.0
Heavy underdogUmpiry ScorePartial · surface data limited- Back-to-back day (−0.5)
Form & Matchup
5.0+2 Hard Elo edge
Surface ELO5.0Hard Elo 1502
5.1Overall Elo 1504
ELO gap4.9Overall Elo 1497
5.0No prior meetings
H2H5.0No prior meetings
Surface form
3.94 of last 10 on hard
Context
5.0Didn't play here last year
Defending pts5.0Didn'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
29°COvercast
Wind 3 km/hHumidity 65%