Japan

Kokoro Isomura: Ranking, Schedule & Stats

ATP Rank
#571
Age
23
Height
175 cm (5'9")
Plays
Right
1206 Elo

Kokoro Isomura is a professional tennis player from Japan, born 22 January 2003. The Japanese competes on the ATP Tour and plays right-handed. Isomura stands 175 cm (5 ft 9 in) tall.

This page tracks Kokoro Isomura's upcoming schedule, latest results, recent form and surface record, with each match linking through to a detailed head-to-head and pre-match analysis. Scores update live as matches are played.

Rankings

Recent form

4–6 last 10
LWWLLWLWLL

Trends

Isomura has won 11 of the last 30 first sets

37%

Isomura has won 4 of 10 deciding sets

40%

Isomura has won 4 of the last 10 matches

40%

Ranking Projection

No. 571ATP71 pts
12 months agoNo. 474▼ 97 spots
12-month highNo. 424
Expected (draw model)→ ~No. 565
If wins Astana→ ~No. 409

Trajectory from our weekly snapshots. Defending— points dropping in the next ~12 weeks (last year's results at the same events). Win … — points gained by winning the round they're currently in. Expected — most likely landing rank from our draw model (Elo over the bracket). ATP points table.

Freshness

80/ 100Fresh

6 days rest · 2 matches, 57 games (7d)

Recent on-court load (higher = fresher), updated daily. About

Career highs

Ranking · last 12 monthsbestnow
No. 424No. 572
No. 474 · 18 Aug 2025No. 480 · 25 Aug 2025No. 424 · 8 Sep 2025No. 487 · 15 Sep 2025No. 492 · 22 Sep 2025No. 484 · 29 Sep 2025No. 489 · 13 Oct 2025No. 493 · 20 Oct 2025No. 515 · 27 Oct 2025No. 479 · 3 Nov 2025No. 539 · 10 Nov 2025No. 543 · 17 Nov 2025No. 540 · 24 Nov 2025No. 547 · 1 Dec 2025No. 545 · 8 Dec 2025No. 544 · 15 Dec 2025No. 544 · 22 Dec 2025No. 548 · 29 Dec 2025No. 548 · 5 Jan 2026No. 557 · 12 Jan 2026No. 562 · 19 Jan 2026No. 571 · 2 Feb 2026No. 564 · 9 Feb 2026No. 551 · 16 Feb 2026No. 544 · 23 Feb 2026No. 553 · 2 Mar 2026No. 557 · 16 Mar 2026No. 554 · 30 Mar 2026No. 554 · 6 Apr 2026No. 553 · 13 Apr 2026No. 550 · 20 Apr 2026No. 543 · 4 May 2026No. 534 · 18 May 2026No. 541 · 25 May 2026No. 541 · 30 May 2026No. 541 · 1 Jun 2026No. 572 · 8 Jun 2026No. 572 · 15 Jun 2026No. 572 · 17 Jun 2026No. 569 · 18 Jun 2026No. 569 · 22 Jun 2026No. 557 · 28 Jun 2026No. 557 · 29 Jun 2026No. 557 · 6 Jul 2026No. 562 · 13 Jul 2026No. 562 · 14 Jul 2026No. 562 · 16 Jul 2026No. 571 · 20 Jul 2026No. 562 · 28 Jul 2026No. 566 · 3 Aug 2026No. 566 · 9 Aug 2026No. 566 · 10 Aug 2026No. 571 · 17 Aug 2026
12 mo agonow
Umpiry Rating 1596 · peak 1621 · 2025Umpiry rank #781 · ATP #571▼210

Ranking trajectory from our weekly snapshots (last ~12 months); peak rating and longest tour-level win streak from our match records. Umpiry rank is the player’s position by our rating — the arrow shows how many spots that is above (▲) or below (▼) their official ranking.

2026 season form

11–14W–L44%

Last 60 days
4–4

Recent surface record

Hard33–34 (49%)

Career record

33–34W–L

Career surface record

Hard33–34 (49%)

Fitness watch

1 retirementin the last 12 months. Based on match status only — a retirement means the match was stopped after it started, a withdrawal means a walkover before it; we don't publish the medical reason.

RetiredMiyazaki CH · vs Carl Emil Overbeck30 Mar 2026

Recent results

L
vsSamrej K.
Astana · Round of 32 · hard
7-50-64-6
W
vsSasikumar M.
Astana · Qual. Q16 · hard
1-67-66-3
W
vsPark U.
Astana · Qual. Q32 · hard
6-26-2
L
vsPoling K.
Vancouver · Qual. Semi-final · hard
3-64-6
L
vsTrotter J.
Winnipeg · Qual. Final · hard
1-60-6
W
vsJones B.
Winnipeg · Qual. Semi-final · hard
4-66-47-67
L
vsRozin S.
Granby · Qual. Final · hard
6-74-6
W
vsHeck H.
Granby · Qual. Semi-final · hard
0-66-46-1
L
vsPalan D.
Bengaluru 3 · Round of 32 · hard
4-66-33-6
L
vsIvashka I.
Bengaluru 2 · Round of 16 · hard
1-62-6
W
vsSingh K.
Bengaluru 2 · Round of 32 · hard
7-66-3
L
vsVithoontien L.
Wuning 2 CH · Qual. Q2 · hard
4-66-43-6
W
vsPan W.
Wuning 2 CH · Qual. Q1 · hard
6-16-3
L
vsEmil Overbeck C.
Miyazaki CH · Qual. Q1 · hard
3-60-1
L
vsAdded D.
Yokkaichi CH · Round of 32 · hard
4-62-6

Exhibitions & team events

Shown for completeness — not counted in form, surface, or career stats. 12 matches (exhibitions, Davis / Laver / United Cup).

L
vsImai S.
M15 Tokyo 4 · Round of 16 · hard
4-60-6
W
vsTomizawa N.
M15 Tokyo 4 · Round of 32 · hard
6-46-3
L
vsJones M.
M15 Tokyo 3 · Quarter-final · hard
3-66-31-6
W
vsOki Y.
M15 Tokyo 3 · Round of 16 · hard
6-11-66-2
W
vsTaguchi R.
M15 Tokyo 3 · Round of 32 · hard
7-65-77-6
L
vsUchida K.
M25 Takasaki 1 · Quarter-final · hard
2-62-6
W
vsTomida Y.
M25 Takasaki 1 · Round of 16 · hard
6-36-1
W
vsMatsuoka H.
M25 Takasaki 1 · Round of 32 · hard
7-53-66-4
L
vsWhitehouse M.
M25 Sapporo 2 · Round of 16 · hard
5-75-7
W
vsIchikawa T.
M25 Sapporo 2 · Round of 32 · hard
6-26-1
L
vsRawat S.
M25 Bali 2 · Round of 32 · hard
6-43-64-6
L
vsDzhavakian Y.
M25 Bali 1 · Round of 16 · hard
1-63-6

More Japan players

Osaka N.#13 WTAShimabukuro S.#90 ATPUchijima M.#100 WTAMochizuki S.#112 ATPSakatsume H.#136 WTASakamoto R.#165 ATP

Explore the rankings

ATP rankingsLive rankingsRace to TurinElo rankingsHard-court Elo

Frequently asked questions

How tall is Kokoro Isomura?

Kokoro Isomura is 175 cm (5 ft 9 in) tall.

When was Kokoro Isomura born?

Kokoro Isomura was born on 22 January 2003 (23 years old).

Where is Kokoro Isomura from?

Kokoro Isomura is from Japan.

Is Kokoro Isomura right or left-handed?

Kokoro Isomura plays right-handed.

How good is Kokoro Isomura on hard?

Kokoro Isomura has won 49% of hard-court matches (33-34).