Jonas Forejtek
2019
| US OPEN JUNIOR | [4] | Win |
| WIMBLEDON JUNIOR | [2] | 1R |
| J1 ROEHAMPTON | [2] | 3R |
| ROLAND GARROS JUNIOR | [2] | 3R |
| JAMILAN | [4] | Win |
| J1 VRSAR | [1] | Win |
| AUSTRALIAN OPEN JUNIOR | [8] | 3R |
| J1 TRARALGON | [8] | 2R |
2018
| J1 BRADENTONFL | [8] | 2R |
| US OPEN JUNIOR | 2R | |
| J1 REPENTIGNY | [13] | 2R |
| WIMBLEDON JUNIOR | 1R | |
| J1 ROEHAMPTON | 2R | |
| J1 OFFENBACH | [4] | 2R |
| ROLAND GARROS JUNIOR | 1R | |
| J1 BEAULIEUSURMER | [10] | Final |
| J2 ISTRES | [4] | Semi |
| J2 CAPDAIL | [3] | 1R |
| J1 SARAWAK | [6] | Quarter |
| J1 NONTHABURI | [6] | Semi |
| AUSTRALIAN OPEN JUNIOR | 1R |
2017
| J1 BRADENTONFL | 2R | |
| J2 PRAGUE | [3] | Semi |
| J2 BUDAPEST | [2] | Final |
| J2 BUDAORS | [3] | Semi |
| J2 PLZEN | Final | |
| J2 GLADBECK | Quarter | |
| J1 OFFENBACH | 3R | |
| J2 BYTOM | 1R | |
| J2 HODMEZOVASARHELY | Semi | |
| J2 PIESTANY | Semi | |
| J2 CAPDAIL | 1R | |
| J4 ESCH-ALZETTE | [7] | Final |
| J4 HAMBURG | [6] | 3R |
| J1 VESTEC | 1R |
Nation
CZE
Age
25 years old (born in 2001)
World Ranking
ATP Ranking 307th
Year-end Junior World Ranking
- Year-end 2019 3th
- Year-end 2018 26th
Rival
thiago agustin tirante (1-2)
carlos lopez montagud (0-3)
matteo arnaldi (2-0)
matheus pucinelli de almeida (2-0)
francesco passaro (2-0)
Match Details
US OPEN JUNIOR
| W | 1R | Zachary Svajda | 6-3 6-3 |
| W | 2R | Luca Nardi | 6-3 6-2 |
| W | 3R | Peter Makk | 6-1 3-6 6-2 |
| W | QF | Milan Welte | 3-6 7-5 7-5 |
| W | SF | Brandon Nakashima | 7-6 6-3 |
| W | F | Emilio Nava | 6-7 6-0 6-2 |
WIMBLEDON JUNIOR
| L | 1R | James Story | 4-6 6-7 |
J1 ROEHAMPTON
| W | 1R | Harry Wendelken | 7-5 6-1 |
| W | 2R | Natan Rodrigues | 6-0 5-7 6-1 |
| L | 3R | Valentin Royer | 6-7 4-6 |
ROLAND GARROS JUNIOR
| W | 1R | Eliot Spizzirri | 7-6 7-6 |
| W | 2R | Matheus Pucinelli De Almeida | 7-6 6-4 |
| L | 3R | Flavio Cobolli | 4-6 6-3 2-6 |
JAMILAN
| W | 1R | Francesco Passaro | 4-6 7-6 6-1 |
| W | 2R | Lilian Marmousez | 2-6 6-3 6-2 |
| W | 3R | Flavio Cobolli | 6-2 6-0 |
| W | QF | Tyler Zink | 6-4 7-5 |
| W | SF | Matteo Arnaldi | 6-1 6-3 |
| W | F | Thiago Agustin Tirante | 6-3 6-4 |
J1 VRSAR
| W | 1R | Alexander Gaponenko | 6-1 6-2 |
| W | 2R | Samir Hamza Reguig | 6-0 6-0 |
| W | 3R | Marco Furlanetto | 6-4 6-4 |
| W | QF | Matteo Arnaldi | 6-4 6-3 |
| W | SF | Francesco Passaro | 6-2 6-0 |
| W | F | Matheus Pucinelli De Almeida | 6-2 5-7 7-6 |
AUSTRALIAN OPEN JUNIOR
| W | 1R | Dane Sweeny | 6-3 6-0 |
| W | 2R | Peter Makk | 6-4 6-4 |
| L | 3R | Giulio Zeppieri | 3-6 4-6 |
J1 TRARALGON
| W | 1R | Tom Evans | 6-7 6-3 7-6 |
| L | 2R | Lilian Marmousez | 5-7 6-2 6-7 |
J1 BRADENTONFL
| W | 1R | Daniil Glinka | 6-2 6-2 |
| L | 2R | Mateus Alves | 4-6 1-6 |
US OPEN JUNIOR
| W | 1R | Naoki Tajima | 6-1 6-3 |
| L | 2R | Jenson Brooksby | 1-6 2-6 |
J1 REPENTIGNY
| L | 2R | Emilio Nava | 5-7 3-6 |
WIMBLEDON JUNIOR
| L | 1R | Tristan Boyer | 6-7 7-6 4-6 |
J1 ROEHAMPTON
| W | 1R | Timofei Skatov | 6-4 7-5 |
| L | 2R | Thiago Agustin Tirante | 3-6 6-7 |
J1 OFFENBACH
| L | 2R | Bastien Presuhn | 4-6 1-6 |
ROLAND GARROS JUNIOR
| L | 1R | Cannon Kingsley | 6-7 1-6 |
J1 BEAULIEUSURMER
| W | 2R | Petros Tsitsipas | 6-3 6-1 |
| W | 3R | Yanki Erel | 6-4 6-3 |
| W | QF | Lodewijk Weststrate | 0-6 6-3 6-1 |
| W | SF | Adrian Andreev | 6-4 3-6 7-6 |
| L | F | Nicolas Alvarez Varona | 1-6 0-6 |
J2 ISTRES
| W | 1R | Damien Salvestre | 6-4 6-2 |
| W | 2R | Soufiane El Mesbahi | 0-6 7-5 6-0 |
| W | QF | Nikolay Vylegzhanin | 6-2 6-7 7-5 |
| L | SF | Jesper De Jong | 4-6 7-5 2-6 |
J2 CAPDAIL
| L | 1R | Louis Herman | 6-4 6-7 2-6 |
J1 SARAWAK
| W | 2R | Hikaru Shiraishi | 6-2 6-3 |
| W | 3R | Yannik Steinegger | 3-6 6-2 6-3 |
| L | QF | Jack Draper | 0-6 2-6 |
J1 NONTHABURI
| W | 2R | Arthur Craig Pantino | 3-6 6-3 6-1 |
| W | 3R | Yecong Mo | 6-2 7-5 |
| W | QF | Seita Watanabe | 6-4 6-1 |
| L | SF | Dalibor Svrcina | 3-6 2-6 |
AUSTRALIAN OPEN JUNIOR
| L | 1R | Rinky Hijikata | 5-7 1-6 |
J1 BRADENTONFL
| W | 1R | William Woodall | 7-5 3-6 6-3 |
| L | 2R | Ivan Yatsuk | 4-6 5-7 |
J2 PRAGUE
| W | 2R | Sebastian Grundtvig Jorgensen | 6-4 6-2 |
| W | 3R | Roberts Grinvalds | 6-3 6-2 |
| W | QF | Henry Von Der Schulenburg | 6-2 7-6 |
| L | SF | Carlos Lopez Montagud | 4-6 2-6 |
J2 BUDAPEST
| W | 1R | Richard Dulganov | 6-0 7-6 |
| W | 2R | Roberts Grinvalds | 6-4 6-1 |
| W | QF | Henri Squire | 6-3 7-6 |
| W | SF | Alejandro Vedri Asensi | 6-0 6-3 |
| L | F | Carlos Lopez Montagud | 2-6 4-6 |
J2 BUDAORS
| W | 1R | Zsombor Velcz | 7-5 6-0 |
| W | 2R | Justin Schlageter | 6-2 6-1 |
| W | QF | Wojciech Marek | 7-5 6-2 |
| L | SF | Carlos Lopez Montagud | 3-6 6-3 4-6 |
J2 PLZEN
| W | 1R | Wojciech Marek | 6-3 6-3 |
| W | 2R | Samuel Puskar | 6-1 6-0 |
| W | QF | Adrian Andreev | 6-0 4-1 |
| W | SF | Fabian Marozsan | 6-3 5-7 7-5 |
| L | F | Dalibor Svrcina | 7-6 5-7 2-6 |
J2 GLADBECK
| W | 1R | Finn Reynolds | 6-0 6-1 |
| W | 2R | Philip Hjorth | 6-1 1-6 6-2 |
| L | QF | Alejandro Vedri Asensi | 0-6 4-6 |
J1 OFFENBACH
| W | 1R | Facundo Diaz Acosta | 6-2 6-1 |
| W | 2R | Ajeet Rai | 4-6 6-0 6-4 |
| L | 3R | Dan Added | 2-6 5-7 |
J2 BYTOM
| L | 1R | Lorenzo Musetti | 7-6 6-7 1-6 |
J2 HODMEZOVASARHELY
| W | 1R | Artur Kulibaba | 6-0 2-6 6-2 |
| W | 2R | Max Stewart | 6-2 6-1 |
| W | QF | Juan Manuel Cerundolo | 6-2 4-6 6-2 |
| L | SF | Carlos Sanchez Jover | 5-7 0-6 |
J2 PIESTANY
| W | 1R | Siim Troost | 7-6 6-0 |
| W | 2R | Patrick Kristensen | 7-6 6-2 |
| W | 3R | Kacper Zuk | 6-2 6-3 |
| W | QF | Albert Sprlak Puk | 6-2 6-4 |
| L | SF | Michael Vrbensky | 2-6 3-6 |
J2 CAPDAIL
| L | 1R | Thiago Agustin Tirante | 6-7 6-3 4-6 |
J4 ESCH-ALZETTE
| W | 1R | James Mackinlay | 6-4 6-2 |
| W | 2R | Louis Herman | 6-3 |
| W | QF | Niklas Schell | 6-2 6-7 6-4 |
| W | SF | Freddie Grant | 6-3 7-6 |
| L | F | Chris Rodesch | 5-7 1-4 |
J4 HAMBURG
| W | 2R | Rudolf Niklas Christiansen | 6-1 6-1 |
| L | 3R | Allan Deschamps | 6-2 1-6 6-7 |
J1 VESTEC
| L | 1R | Aliaksandr Liaonenka | 4-6 4-6 |
Junior Tennis Database is a site that summarizes the results of ITF junior tennis tournaments.
Number of registered tournaments: 14549, Number of registered players: 7,577, Number of registered results: 451,713