Marta Kostyuk

Insights

Breakthrough peak came at the 2026 French Open

Kostyuk’s best Grand Slam result in the data is a semifinal at the 2026 French Open, achieved at age 23. That is a clear step beyond her previous bests of one quarterfinal and two round-of-16 finishes.

Her strongest Slam is the French Open, not the hard courts

The French Open is the only major where she has reached the semifinal and also the only one where she has reached the quarterfinal. Across 2021-2026, her French Open results range from R128 to S, showing both her ceiling and her widest spread.

Australian Open produced her earliest and most consistent deep runs

Her Grand Slam debut in the data was a 2018 Australian Open R32 at age 15, and she later matched or exceeded that level with R32 finishes in 2022 and 2023, plus a quarterfinal in 2024. No other Slam shows that combination of an early breakthrough and repeated mid-to-late-round progress.

Wimbledon and the US Open have mostly stalled around the middle rounds

At Wimbledon, her best result is R32, reached in 2023 and again in 2024, while the US Open best is also R32, reached in 2020 and 2024. Neither event has produced a quarterfinal or better in the supplied results.

Her Slam record is positive but built on many early exits

Across 25 tournaments and 60 matches, she owns a 35-25 record, which is a 58% win rate. The results table also shows 10 finishes at R128 or R64, so the winning record is supported by a mix of deep runs and frequent early-round losses.