Valentina Ryser vs Haruka Kaji — W100 Takasaki Semi-final

W100 Takasaki · CHALLENGER · Semi-final
SUI
Valentina Ryser
#313WTA
1463ELO
1429Hard ELO
25 yrs
Last 10 · pre-match
LWWWLWWWLL
0 — 0
Sets
Monday, 18 May 2026
hard
JPN
Haruka Kaji
#288WTA
1421ELO
1412Hard ELO
31 yrs · Right-handed
Last 10 · pre-match
WWWLWLWLWL
Ryser V.
6-3 6-3
Kaji H.
Ryser V.
662
Kaji H.
33–

Valentina Ryser defeated Haruka Kaji 6-3 6-3 in the W100 Takasaki semi-final on hard. The upset overturned the form book — Haruka Kaji came in ranked #288, defending last year's round of 32, but Valentina Ryser had been the form player, winning 6 of their last 8 on hard.

Key context

Head to head

No previous meetings on record.

Serve vs return

This season
Ryser V.serving58% hold

wins 53% of points on serve vs Kaji H.

Kaji H.serving58% hold

wins 53% of points on serve vs Ryser V.

Baseline battle — serve is shaky, expect plenty of breaks

Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About

Statistics

This season
Ryser V.Kaji H.
1st serve in·Clear edge
55%
67%
1st serve points won·Slight edge
68%
59%
2nd serve points won·Even
46%
49%
Service points won·Even
58%
56%
Return points won·Even
43%
45%
Break points saved·Slight edge
57%
52%
Aces / match·Dominant
4.3
1.2
Double faults / match·Dominant
5.7
2.0

Averages over each player's completed matches in the selected window (30 vs 26). ATP, WTA & Challenger.

Freshness

Recent load
Ryser V.Kaji H.
Freshness·
77
—

Ryser V.: 4 days rest · 3 matches, 67 games (7d). Higher means fresher. About

Conditions

Court speed
Medium-fastrewards aggression
SlowFast

Draw

Final
Naito Y.
Ryser V.
6-46-3
Semi-finals
Naito Y.
Kobori M.
6-756-46-4
Ryser V.
Kaji H.
6-36-3
Quarter-finals
Kaji H.
Saigo R.
6-06-4
Kobori M.
Sato H.
6-36-4
Ryser V.
Kinoshita H.
6-46-4
Naito Y.
Serban R.
6-36-4
R16
Naito Y.
Shimizu E.
7-56-4
Saigo R.
Park S.
2-65-0
Kobori M.
Yamaguchi M.
6-46-3
Kaji H.
Tian F.
6-06-4
Sato H.
Shimizu A.
6-36-4
Kinoshita H.
Saito S.
6-16-3
Ryser V.
Kawaguchi N.
7-56-2
Serban R.
Koike E.
4-67-56-4
R32
Saigo R.
Ren Y.
6-26-4
Park S.
Cabrera L.
7-50-66-1
Saito S.
Miyazaki Y.
6-736-46-2
Yamaguchi M.
Lansere S.
6-36-2
Serban R.
Dunne K.
6-06-2
Tian F.
Micic E.
6-36-4
Kaji H.
Matsuda M.
6-27-61
Kobori M.
Yamazaki I.
6-07-66
Naito Y.
Inoue H.
6-787-56-4
Sato H.
Sawangkaew M.
6-33-66-3
Koike E.
Sema E.
6-33-67-5
Shimizu A.
Sawashiro K.
6-06-3
Kawaguchi N.
Ishii S.
6-37-62
Kinoshita H.
Mushika M.
5-3
Ryser V.
Okamura K.
4-66-46-3
Shimizu E.
Shi H.
4-66-16-2