Sayaka Ishii is a professional tennis player from Japan, born 31 August 2005. The Japanese competes on the WTA Tour. The Japanese was born in Shibuya.
This page tracks Sayaka Ishii'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.
Biographical details (birthplace, residence, coach, height, weight) sourced from Wikidata (CC0 public domain). See Sayaka Ishii on Wikipedia for more.
Rankings
Trends
Ishii has won 11 of the last 30 first sets
37%Ishii has won 6 of 9 deciding sets
67%Ranking Projection
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). WTA points table.
Career highs
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
9–14W–L39%
- Last 60 days
- 0–2
- Current streak
- 1 loss
Recent surface record
Career record
37–39W–L
Career surface record
Recent results
Exhibitions & team events
Shown for completeness — not counted in form, surface, or career stats. 12 matches (exhibitions, Davis / Laver / United Cup).
More Japan players
Explore the rankings
Frequently asked questions
When was Sayaka Ishii born?
Sayaka Ishii was born on 31 August 2005 (20 years old).
Where is Sayaka Ishii from?
Sayaka Ishii is from Japan, born in Shibuya on 31 August 2005.
How good is Sayaka Ishii on hard?
Sayaka Ishii's hard-court record stands at 29-26, a 53% win rate.