Ayumi Koshiishi vs Kallista Liu — W50 Guiyang Round of 32

W50 Guiyang · CHALLENGER · Round of 32
JPN
Ayumi Koshiishi
#695WTA
1224ELO
1213Hard ELO
25 yrs
Last 10 · pre-match
LWWLLLLWLL
0 — 0
Sets
Monday, 8 September 2025
hard
USA
Kallista Liu
#958WTA
22 yrs
Last 10 · pre-match
LLWWLLLWWW
Koshiishi A.
7-6 6-2
Liu K.
Koshiishi A.
71062
Liu K.
682–

Ayumi Koshiishi defeated Kallista Liu 7-6 6-2 in the W50 Guiyang round of 32 on hard.

Key context

Head to head

No previous meetings on record.

Serve vs return

This season
Koshiishi A.serving44% hold

wins 47% of points on serve vs Liu K.

Liu K.serving37% hold

wins 45% of points on serve vs Koshiishi A.

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
Koshiishi A.Liu K.
1st serve in·Slight edge
62%
70%
1st serve points won·Slight edge
58%
52%
2nd serve points won·Even
41%
42%
Service points won·Even
52%
49%
Return points won·Even
45%
45%
Break points saved·Even
48%
47%
Aces / match·Clear edge
2.1
0.4
Double faults / match·Dominant
2.7
1.2

Averages over each player's completed matches in the selected window (44 vs 24). ATP, WTA & Challenger.

Umpiry Score

Pre-match
Koshiishi A.
5.7
Slight disadvantageUmpiry ScorePartial · surface data limited
Liu K.
4.8
Heavy underdogUmpiry ScorePartial · surface data limited
  • Extended break: 28 days (−0.3)
Form & Matchup
5.0No prior meetings
H2H
5.0
3.5
Surface form
3.1
0.0
Win streak
0.0Lost last 6
Context
5.0
Defending pts
5.0

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

Court speed
Medium-fastrewards aggression
SlowFast

Draw

Final
Guo H.
Zhu L.
6-34-66-1
Semi-finals
Guo H.
Wang J.
6-46-1
Zhu L.
Kolodynska J.
6-42-66-0
Quarter-finals
Guo H.
Tian F.
4-66-06-2
Zhu L.
Wang J.
6-16-1
Wang J.
Ren Y.
6-36-2
Kolodynska J.
Liu F.
6-36-0
R16
Zhu L.
Ozeki M.
6-06-4
Guo H.
Kobayashi H.
6-16-3
Ren Y.
Koshiishi A.
2-66-46-3
Kolodynska J.
Wang Y.
6-36-4
Wang J.
Zelinskaya D.
6-26-1
Liu F.
Chen M.
6-16-2
Wang J.
Luo X.
6-26-0
Tian F.
Zhang Y.
5-76-02-0
R32
Zhu L.
Sato N.
6-36-2
Wang Y.
Panshina V.
3-66-46-4
Chen M.
Zhang J.
6-37-5
Koshiishi A.
Liu K.
7-686-2
Wang J.
Huang Y.
3-67-626-4
Liu F.
Ku Y.
6-06-3
Guo H.
Helgo M.
6-25-76-1
Kobayashi H.
Han J.
7-57-5
Luo X.
Savinykh V.
6-26-2
Ozeki M.
Lu J.
6-46-4
Kolodynska J.
Saigo R.
6-36-3
Wang J.
Nugroho P.
5-77-56-1
Zelinskaya D.
Pavlova K.
2-66-26-1
Ren Y.
Matsuda R.
6-06-4
Zhang Y.
Muramatsu C.
7-617-5
Tian F.
Sato H.
6-26-1