Natsumi Kawaguchi vs Sayaka Ishii | Sayaka Ishii Wins 5-7 7-6 6-2

UMPIRY

W50 NanaoR16CarpetThu 24 Sept · 11:43Final2h 43m

Natsumi Kawaguchi(6)WTA #411 · JPN

Sayaka IshiiWTA #588 · JPN

SetsGames1

76⁹2

57¹¹6

Sayaka Ishii defeated Natsumi Kawaguchi 5-7, 7-6, 6-2 in the Round of 16 at the W50 Nanao tournament on carpet. Ishii and Kawaguchi were even in aces, 3-3, but Ishii committed more double faults, 10-3. Ishii converted 50% of break points and won 4 service breaks, while Kawaguchi won 5 service breaks and converted 56% of break points.

Generated automatically from Umpiry match data.

Key context

Match story: Sayaka Ishii dropped the opening set before beating Natsumi Kawaguchi 5–7 7–6 6–2.

How the match was decided

Auto-generated

Ishii S. came through in three sets, breaking twice in each.

Breaks of serveIshii S. 6 · Kawaguchi N. 5
1st-serve points wonIshii S. 70% · Kawaguchi N. 64%
AcesIshii S. 3 · Kawaguchi N. 3

Turning points

When the match moved

Set 17–5SetKawaguchi N. · Broke to take the set
Set 22–1Break backIshii S. · Broke back
Set 26–6Break backKawaguchi N. · Broke back
Set 31–3BreakIshii S. · Broke, never broken back
Set 32–6SetIshii S. · Broke to take the set

Serve flowKawaguchi N. broken 6 times · Ishii S. broken 5 times.

Hold to love/15
Hold to 30
Hold to 40 / deuce
Broken
Result unknown

Kawaguchi N.

10/16Ishii S.

11/16

Set 1Set 2Set 3

Match momentum

Whole matchKawaguchi N.Ishii S.

Late momentumIshii S.12

5Last 12 points7

5Last 3 games12

5/9Break points4/9

Break of serve

Match statistics

Kawaguchi N.Ishii S.

Serve

3Aces3
3Double faults10
64%1st serve points won70%
63% · 10/16Service games held69% · 11/16

Return

56%Break points won50%
5Breaks of serve6

Serve & return performance

Key performance gaps

Double faultsKawaguchi N. served 3 double faults, Ishii S. 10. Largest performance gap of the match.+7Kawaguchi N.3Ishii S.10

Common opponents

0 shared · last 12 months

No common opponents in the last 12 months. Surface form and ELO carry more weight here.

Head-to-head

4 meetings · level 2–2

Carpet: Ishii S. leads 1–0 · Hard: level 1–1 · Grass: Kawaguchi N. leads 1–0

Ishii S.September 2026W50 NanaoThis matchCarpet7-5 6-7(9) 2-6
Kawaguchi N.May 2026W100 TakasakiHard6-3 7-6
Ishii S.April 2026W100 GifuHard7-6(5) 6-4
Kawaguchi N.October 2022W25 MakinoharaGrass1-6 6-4 7-5

Draw

Closing odds

Next up

vs Itaya R.View match

Player context

Before the match

Kawaguchi N.Ishii S.1 618ELO1 6215–5Last 106–424Age21Career $90K2026 $16KEarningsCareer $236K2026 $39K

Match info

Started11:43 local
Duration2h 43m

Cite this

Sayaka Ishii beat Natsumi Kawaguchi 7-5 6-7(9) 2-6. Umpiry, "Natsumi Kawaguchi vs Sayaka Ishii — W50 Nanao Round of 16", https://umpiry.com/match/2026-09-24/ishii-vs-kawaguchi-w50-nanao-r16?utm_source=cite (as of 24 September 2026).