Ondrej Horak
2020
| J1 PANCEVO-3 | [6] | 1R |
| J2 RAKOVNIK-2 | 1R | |
| J2 CHISINAU | [8] | 1R |
| J1 SVIATOPETRIVSKEVILLAGE | 2R | |
| J1 PRAGUEWEST | [15] | 2R |
| J2 BRATISLAVA | 1R |
2019
| JAOSAKA | 1R | |
| J4 VELILOSINJ | [3] | Semi |
| J2 PRAGUE | [15] | 2R |
| J2 GYOR | Quarter | |
| J4 SKOPJE | [1] | 2R |
| J4 ZILINA | [1] | Semi |
| J4 DUBLIN | [3] | Semi |
| J3 NEUCHATEL | 2R | |
| J5 CHISINAU-2 | [2] | Semi |
| J5 SKOPJE-2 | [6] | Win |
| J5 ISFAHAN | [8] | Win |
| J3 ISTANBUL | 3R | |
| J5 STAVANGER | Quarter | |
| J1 PRAGUEWEST | 1R |
Nation
CZE
World Ranking
ATP Ranking　1704th
Year-end Junior World Ranking
- Year-end 2020 182th
- Year-end 2019 241th
Rival
alexandr koliev (2-0)
jerome kym (0-2)
kalin ivanovski (2-0)
Match Details
2020 J1 PANCEVO-3
| L | 1R | Petar Teodorovic | 2-6 2-6 |
2020 J2 RAKOVNIK-2
| L | 1R | Szymon Kielan | 4-6 5-7 |
2020 J2 CHISINAU
| L | 1R | Maikel De Boes | 5-7 1-6 |
2020 J1 SVIATOPETRIVSKEVILLAGE
| W | 1R | Alexandr Koliev | 5-7 6-3 6-1 |
| L | 2R | Aleksander Orlikowski | 4-6 7-5 5-7 |
2020 J1 PRAGUEWEST
| L | 2R | Michal Novansky | 2-6 3-6 |
2020 J2 BRATISLAVA
| L | 1R | German Samofalov | 3-6 6-7 |
2019 JAOSAKA
| L | 1R | Geni Inoue | 7-6 6-7 2-6 |
2019 J4 VELILOSINJ
| W | 2R | Dino Prizmic | 6-2 6-4 |
| W | 3R | Kalin Ivanovski | 6-3 6-7 6-1 |
| W | QF | Borna Devald | 6-3 6-3 |
| L | SF | Luka Petrovic | 6-3 0-6 2-6 |
2019 J2 PRAGUE
| L | 2R | Jasza Szajrych | 0-6 2-6 |
2019 J2 GYOR
| W | 1R | Peter Kalocsai | 7-5 6-2 |
| W | 2R | Lukas Neumayer | 7-5 4-6 6-3 |
| L | QF | Jerome Kym | 0-6 0-6 |
2019 J4 SKOPJE
| L | 2R | Berk Bugarikj | 3-6 3-6 |
2019 J4 ZILINA
| W | 2R | Adrian Kopal | 6-4 6-3 |
| W | 3R | Lukas Bielik | 6-7 7-6 6-4 |
| W | QF | Jakub Nicod | 6-4 6-2 |
| L | SF | Matej Galik | 2-6 2-6 |
2019 J4 DUBLIN
| W | 1R | Stephen O Nuallain | 6-2 6-4 |
| W | 2R | Olaf Pieczkowski | 5-7 6-4 6-3 |
| W | QF | Louis Skupien | 6-1 6-1 |
| L | SF | Sam Bossem | 2-6 1-6 |
2019 J3 NEUCHATEL
| W | 1R | Jeffrey Fradkin | 6-4 6-3 |
| L | 2R | Jerome Kym | 5-7 3-6 |
2019 J5 CHISINAU-2
| W | 1R | Hector Talens Serra | 6-4 7-6 |
| W | 2R | Daniil Kodzhebash | 6-1 6-3 |
| W | QF | Stefan Andrei | 6-1 6-1 |
| L | SF | Amaury Raynel | 6-3 4-6 3-6 |
2019 J5 SKOPJE-2
| W | 1R | Kalin Ivanovski | 6-0 6-1 |
| W | 2R | Marc Othman Ktiri | 6-7 6-3 6-2 |
| W | QF | Benedek Herman | 6-3 3-6 7-5 |
| W | SF | Karol Tomanski | 6-2 6-4 |
| W | F | Kyle Lok Yin Tang | 6-0 6-3 |
2019 J5 ISFAHAN
| W | 1R | Hesam Soltani Afarani | 6-3 6-0 |
| W | 2R | Deniz Temel | 6-2 6-0 |
| W | QF | Sina Moghimi | 6-2 3-6 6-1 |
| W | SF | Alexandr Koliev | 6-2 6-4 |
| W | F | Artur Kukasian | 6-2 6-2 |
2019 J3 ISTANBUL
| W | 1R | Carl Gustafsson | 2-6 6-2 6-1 |
| W | 2R | Mikolaj Lorens | 6-3 6-1 |
| L | 3R | Ilarion Danilchenko | 2-6 0-6 |
2019 J5 STAVANGER
| W | 1R | Felix Nordby | 7-6 3-6 6-0 |
| W | 2R | Ugnius Bickauskis | 7-5 6-4 |
| L | QF | Alexandre De Villepin | 5-7 5-7 |
2019 J1 PRAGUEWEST
| L | 1R | Mans Dahlberg | 6-7 4-6 |
Junior Tennis Database is a site that summarizes the results of ITF junior tennis tournaments.
Number of registered tournaments: 11227, Number of registered players: 7,119, Number of registered results: 411,522