| Daniil Ostapenkov | |
| Birth Date: | 2003 5, df=yes |
| Plays: | Right-handed (two-handed backhand) |
| Careerprizemoney: | $8,758 |
| Singlesrecord: | 1–2 |
| Singlestitles: | 0 |
| Highestsinglesranking: | 1,140 (21 November 2022) |
| Currentsinglesranking: | 1,200 (27 February 2023) |
| Doublesrecord: | 0–0 |
| Doublestitles: | 0 |
| Highestdoublesranking: | 497 (27 February 2023) |
| Currentdoublesranking: | 497 (27 February 2023) |
| Updated: | 27 February 2023 |
Daniil Ostapenkov (born May 8, 2003) is a Belarusian professional tennis player. He was ranked as high as No. 48 in the ITF junior rankings.
Ostapenkov is best known for his shocking upset win, in straight sets, over world No. 15 and former world No. 8 Diego Schwartzman during a Davis Cup match against Argentina.[1] At the time, Ostapenkov did not have an ATP ranking.
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| Result | W–L | Date | Tournament | Tier | Surface | Partner | Opponent | Score | |
|---|---|---|---|---|---|---|---|---|---|
| Loss | 0–1 | M25 Tbilisi, Georgia | World Tennis Tour | Clay | Erik Arutiunian | Ivan Liutarevich Grigoriy Lomakin | 6–3, 6–7(4–7), [5–10] | ||
| Win | 1–1 | M15 Sharm El Sheikh, Egypt | World Tennis Tour | Hard | Erik Arutiunian |  Lukas KreinerRobert Strombachs | 6–3, 6–4 | ||
| Win | 2–1 | M25 Monastir, Tunisia | World Tennis Tour | Hard | Erik Arutiunian | Neil Oberleitner Oleksandr Ovcharenko | 6–1, 6–7(3–7), [10–6] |