Marta Kostyuk

WTA ELO profile · tour-level matches since 2017

ELO 2057 · #5 Hard #10 Clay #3 Grass #18 Last match: Aug 30, 2026

Season ELO trajectory

One point per match: the player's ELO rating after that match, matches in round order. Ratings are season-scoped: every January the engine re-seeds each player from WTA entry points, then updates after every result. That is why trajectories are shown one season at a time. Hover a point for the match behind it.

Career record

186-118 61.2% in 304 matches

Clay 54-27
Grass 12-14
Hard 120-77

Season by season

SeasonMW-LStartPeakEnd
2026 43 35-8 1666 2145 2057
2025 44 25-19 1747 1900 1803
2024 50 31-19 1632 1962 1801
2023 46 25-21 1582 1781 1718
2022 40 23-17 1622 1742 1672
2021 38 22-16 1577 1783 1716
2020 17 10-7 1538 1675 1599
2019 13 9-4 1551 1651 1635
2018 12 6-6 1500 1654 1559
2017 1 0-1 1500 1485 1485

Recent matches

WeekTournamentOpponentResult
Aug 30, 2026 Us Open · Hard Ekaterina Alexandrova W 2-0
Sloane Stephens W 2-0
Storm Hunter W 2-0
Aug 13, 2026 Cincinnati · Hard Coco Gauff L 0-2
Mirra Andreeva W 2-1
Sloane Stephens W 2-0
Sofia Kenin W 2-1
Aug 02, 2026 Montreal · Hard Iga Swiatek L 1-2
Madison Keys W 2-0
Katherine Sebov W 2-0

Serve predictions: how close do we get on Marta Kostyuk?

2025 · out-of-sample backtest Aces per match: 3.1 actual vs 2.8 projected
1.63 our average miss per match
1.96 baseline average miss (last five matches)
+17% accuracy edge over the baseline

Comparison covers 39 of the 44 aces projections we made in 2025. A match needs five earlier matches on record before the baseline exists.

The baseline predicts a player's aces as the average of their last five matches. Our model beats it when its projections land closer to what actually happened. Both numbers are the average miss per match, so lower is better, and both are for the selected season only.

Predictability: does Marta Kostyuk follow the script?

On serve · 2026
SeasonMW-LModel hitUpsetsVerdict
2026 43 35-8 72.1% 12 vs 13.0 exp On serve
2025 bt 44 25-19 68.2% 14 vs 16.8 exp On serve
2024 bt 50 31-19 70.0% 15 vs 17.6 exp On serve

An upset = our model's favorite losing. "Upsets" compares how many actually happened in Marta Kostyuk's matches with how many the model expected for that exact schedule. A season-level read (a wild-card season does not carry over year to year). How to read this · full board: most predictable WTA players.

Reuse this data · CC BY 4.0

The WTA ELO ratings dataset is free to reuse, including commercially, under CC BY 4.0. Attribution with a link is the only requirement. Copy-paste credit:

Data: <a href="https://www.predixsport.com/wta_tennis-power-rankings/marta-kostyuk">WTA ELO ratings by Predixsport</a> (CC BY 4.0)