J. Pegula leads the head-to-head 5-3 since 2018 against M. Kostyuk, over 8 matches.
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34 ATP & WTA matches analysed today
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By surface
| Surface | M. Kostyuk | J. Pegula |
| Hard | 2 | 5 |
| Clay | 1 | 0 |
Current ELO by surface
| Surface | M. Kostyuk | J. Pegula |
| Hard |
1865 (127-81) |
2074 (206-79) |
| Clay |
1994 (47-22) |
1867 (43-19) |
| Grass |
1739 (16-15) |
1900 (29-13) |
ELO is computed per surface from results since 2018; the win-loss pair is that surface's record.
Match history
| Date | Winner | Score | Event |
| Nov. 10, 2026 | J. Pegula | 2 - 0 | Finals - Riyadh · hard |
| April 26, 2026 | M. Kostyuk | 2 - 0 | Madrid · 1/16-finals · clay |
| Jan. 10, 2026 | M. Kostyuk | 2 - 0 | WTA Brisbane · Semi-finals · hard |
| Oct. 1, 2025 | J. Pegula | 2 - 1 | Beijing · 1/8-finals · hard |
| March 24, 2025 | J. Pegula | 2 - 0 | Miami · 1/8-finals · hard |
| March 3, 2024 | M. Kostyuk | 2 - 0 | San Diego · Semi-finals · hard |
| Jan. 20, 2023 | J. Pegula | 2 - 0 | Australian Open · 1/16-finals · hard |
| Aug. 17, 2022 | J. Pegula | 2 - 1 | Cincinnati · 1/16-finals · hard |
Recent form
J. Pegula — 2-3 in the last 5
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