World No. 15 · 3 career titles · career win–loss 58–24. Match history, ranking timeline and head-to-head records below.

| Country | Czech Republic |
| Born | 2005 |
| Plays | 右利き |
| Height | 193 cm |
| Win–loss | 58–24 |
| Titles | 3 |
| Finals | 1 |
| Ranking | #15 · 2 495 ポイント |
| 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 | |
|---|---|---|---|---|
| L | Laver Cup · UNK | Brandon Nakashima (USA) | 6-1, 3-6, 1-0 | Hard |
| W | Australian Open · R64 | Rafael Jodar (SPA) | 2-6, 4-6, 4-6 | Hard |
| L | Beijing · QF | Alex De Minaur (AUS) | 4-1 | Hard |
| W | Beijing · R16 | Arthur Cazaux (FRA) | 3-6, 6-2, 4-6 | Hard |
| W | Beijing · R32 | Miomir Kecmanovic (SRB) | 5-7, 4-6 | Hard |
| L | ATP Laver Cup · UNK | Alex De Minaur (AUS) | 6-3, 6-4 | Hard |
| W | ATP Laver Cup · UNK | Alex Michelsen (USA) | 1-6, 7-6, 8-10 | Hard |
| W | ATP Davis Cup - World Group · UNK | Frances Tiafoe (USA) | 1-6, 4-6 | |
| L | ATP Davis Cup - World Group · UNK | Taylor Fritz (USA) | 6-4, 6-3 | |
| L | Wimbledon · Q1 | Roberto Bautista Agut (SPA) | 3-6, 6-3, 7-5 | Grass |
| W | Wimbledon · QR | Cameron Norrie (GBR) | 6-7, 6-1, 1-6 | Grass |
| W | Brisbane · R16 | D. Lajovic (SRB) | 3-6, 2-6 | Hard |
| Season | Win–Loss | Titles | Year-end rank |
|---|---|---|---|
| 2026 | 1–1 | ||
| 2025 | 6–4 | ||
| 2024 | 10–3 | ||
| 2023 | 3–4 | ||
| 2022 | 38–11 | 4 | |
| 2021 | 0–1 |