Japan

Rira Kosaka: Ranking, Schedule & Stats

Rira Kosaka is a professional tennis player from Japan.

This page tracks Rira Kosaka'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.

Recent form

2–5 last 7

Career highs

Umpiry Rating 1490

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

2–4W–L33%

Recent surface record

Hard1–4 (20%)

Carpet1–1 (50%)

Career record

2–5W–L

Career surface record

Hard1–4 (20%)

Carpet1–1 (50%)

Recent results

W35 Andong · Round of 32 · hard

2-63-6

W35 Fukuoka · Qual. Q16 · carpet

3-66-7⁴

W35 Fukuoka · Qual. Q32 · carpet

W35 MIYAZAKI · Round of 32 · hard

6-23-64-6

W35 Osaka · Qual. Q32 · hard

0-63-6

W35 Osaka · Qual. Q64 · hard

W15 Toyama · Round of 32 · hard

1-66-22-6

Exhibitions & team events

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

W15 Tianjin 3 · Qual. Q64 · hard

1-60-6

W15 Fukui 1 · Round of 16 · hard

1-61-6

W15 Fukui 1 · Round of 32 · hard

7-50-66-2

W15 Fukui 1 · Qual. Q16 · hard

6-36-3

W15 Fukui 1 · Qual. Q32 · hard

W15 Toyama 1 · Qual. Q16 · hard

6-16-0

W35 Osaka 1 · Qual. Q64 · hard

2-61-6

W15 Sapporo 2 · Round of 32 · hard

6-41-64-6

W15 Sapporo 2 · Qual. Q32 · hard

6-37-5

W15 Sapporo 2 · Qual. Q16 · hard

7-6⁷6-2

W15 Sapporo 1 · Qual. Q32 · hard

1-67-55-10

W15 Kawaguchi 1 · Qual. Q32 · hard

2-66-17-10

More Japan players

Osaka N.#13 WTA Shimabukuro S.#90 ATP Uchijima M.#100 WTA Mochizuki S.#112 ATP Sakatsume H.#136 WTA Sakamoto R.#165 ATP

Frequently asked questions

Where is Rira Kosaka from?

Rira Kosaka is from Japan.