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Ayumi Koshiishi is a 25-year-old Japanese professional currently ranked #755 on the live WTA tour with 47 ranking points. Koshiishi moved up 3 places in the most recent release. Koshiishi carries an ELO rating of 1556 over 208 rated matches, strongest on hard courts (1559).
Koshiishi's next scheduled points drop is 2 points from W35 Monastir 3 on July 27, 2026, when that result rolls off the 52-week ranking, and 10 results currently count toward Koshiishi's ranking total.
<a href="https://atprank.com/player/ayumi-koshiishi"><img src="https://atprank.com/api/card/player/ayumi-koshiishi" alt="Live tennis ranking — atprank.com" width="640" height="180" /></a>Live card — updates automatically. Free to embed with the atprank.com link.
From matches in our dataset (2023–present).
Biggest upset victories — matches Ayumi Koshiishi won as the betting underdog, ranked by pre-match odds.
Ayumi Koshiishi’s wins over the highest-rated opponents, by the opponent’s pre-match ELO (since 2023).
1-match win streak · Last match Nov 16, 2025 · last win Nov 16, 2025
Level on points with Ashley Lahey at #754.
Points needed to reach each tier, assuming other players’ totals stay the same.
Ayumi Koshiishi's most-played opponents. Open any rivalry for the full meeting record and a win-probability prediction.
Arianne Hartono
Eudice Wong Chong
Elena Malygina
Diana Marcinkevica
Eunhye Lee
Lucija Ciric Bagaric
Katarina Kuzmova