World No. 23 · 28 career titles · career win–loss 725–406. Match history, ranking timeline and head-to-head records below.
| Country | Czech Republic |
| Born | 2001 |
| Plays | Right-handed |
| Height | 185 cm |
| Ranking | #23 · 2 120 pts |
| Career high | #12 |
Strength 0–100 is our own calculation, not an official tour ranking: 100 is the strongest in history, 70 is about the level of the world No. 100.
| Event · Round | Opponent | Score | Surface | |
|---|---|---|---|---|
| W | Davis Cup Qualifiers 2nd Rd · RR | Ben Shelton (USA) | 6-4, 6-4 | Hard |
| W | Davis Cup Qualifiers 2nd Rd · RR | Learner Tien (USA) | 6-3, 7-5 | Hard |
| W | Qualifiers - Sweden vs Czechia - Czechia vs Sweden #3516377 · UNK | Dragos Nicolae Madaras () | 6-3, 6-4 | |
| W | US Open · R64 | Toby Samuel (GBR) | 6-4, 6-2, 6-4 | Hard |
| L | US Open · R32 | Stefanos Tsitsipas (GRE) | 2-6, 6-1, 7-6, 6-1 | Hard |
| W | US Open · R128 | Pablo Carreno Busta (SPA) | 6-1, 7-6, 4-6, 6-2 | Hard |
| L | Cincinnati, USA #3434971 · R32 | Arthur Fery (GBR) | 7-5, 6-7(7), 1-0(6) | |
| L | Cincinnati Open · R32 | Arthur Fery (GBR) | 7-5, 6-7, 10-6 | Hard |
| L | Cincinnati Open · R32 | Arthur Fils (FRA) | 6-1, 6-7, 6-3 | Hard |
| W | Cincinnati Open · R64 | Matteo Berrettini (ITA) | 6-4, 6-7, 6-3 | Hard |
| L | Omnium Banque Nationale présenté par Rogers · R16 | Rafael Jodar (SPA) | 6-3, 6-3 | Hard |
| W | Omnium Banque Nationale présenté par Rogers · R32 | Alexander Blockx (BEL) | 6-3, 6-4 | Hard |
| Season | Win–Loss | Titles | Year-end rank |
|---|---|---|---|
| 2026 | 40–26 | ||
| 2025 | 62–34 | 1 | |
| 2024 | 38–24 | 1 | |
| 2023 | 56–49 | ||
| 2022 | 55–48 | 1 | |
| 2021 | 133–48 | 13 | |
| 2020 | 43–33 | 1 | |
| 2019 | 101–43 | 4 | |
| 2018 | 75–47 | 3 | |
| 2017 | 75–26 | 4 | |
| 2016 | 17–14 | ||
| 2015 | 24–10 |
