Live points verified daily against the official ranking: 946 of 1,000 in the WTA top 1,000 match to the point. How we check ›
Giselle Isabella Guillen is an 18-year-old Australian professional on the WTA tour with 21 ranking points. Guillen carries an ELO rating of 1499 over 17 rated matches, strongest on clay (1500). Guillen's next scheduled points drop is 15 points from W15 Tweed Heads 1 on August 10, 2026, when that result rolls off the 52-week ranking, and 6 results currently count toward Guillen's ranking total.
<a href="https://atprank.com/player/giselle-isabella-guillen"><img src="https://atprank.com/api/card/player/giselle-isabella-guillen" 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 Giselle Isabella Guillen won as the betting underdog, ranked by pre-match odds.
Giselle Isabella Guillen’s wins over the highest-rated opponents, by the opponent’s pre-match ELO (since 2023).
Last match May 27, 2026 · last win May 20, 2026
Giselle Isabella Guillen's most-played opponents. Open any rivalry for the full meeting record and a win-probability prediction.
Shiho Tsujioka
Monique Barry