Lasse Poertner

2023

J500Plantation	[11]	3R
J300Bradenton	[9]	2R
J300Sanxenxo	[6]	Quarter
Us Open Junior		1R
J300Collegepark	[12]	3R
J300Bamberg	[8]	Final
J300Charleroi-Marcinelle	[15]	Final
J200Villach	[5]	Quarter
J500Offenbach		2R
J200Piestany	[12]	Quarter
J200Istres		Final
J200Capdail		1R
J300Villena		3R
J200Siauliai	[7]	1R
J300Barranquilla		Semi
J300Sanjose		2R
J200Bratislava		2R

2022

J3Aizkraukle-2	[4]	Semi
J3Trnava-2	[8]	Semi
J4Heiveld	[1]	Final
J2Szekesfehervar		2R
J3Barcelona-2	[3]	2R
J3Barcelona	[4]	2R
J2Renningenrutesheim		Quarter
J2Basel		2R
J3Neunkirchen	[10]	3R
J2Gladbeck		1R
J1Bamberg		1R
J2Hannover		2R
J4Skopje	[3]	Quarter
J4Telde	[1]	Semi
J4Hamburg	[12]	Quarter
J4Gjovik	[8]	Final
J4Esch-Alzette		Final
J5Gent	[4]	Semi
J4Offenbach		1R
J4Frankfurt		1R

2021

J3Renningen

Nation

GER

Age

19 years old (born in 2005)

World Ranking

ATP Ranking　911th

Year-end Junior World Ranking

Rival

Mees Rottgering (0-3)

[2023] J300BARRANQUILLA 3-6 7-5 3-6
[2023] J300CHARLEROI-MARCINELLE 3-6 4-6
[2022] J4HEIVELD 4-6 5-7

Michal Krajci (2-1)

[2023] J200PIESTANY 6-3 6-2
[2023] J200STPOELTEN 6-0 6-4
[2022] J3TRNAVA-2 6-7 7-5 2-6

Henry Searle (1-1)

[2023] J300SANJOSE 1-6
[2023] J300BARRANQUILLA 6-3 7-6

Roger Pascual Ferra (2-0)

[2023] J300SANXENXO 6-7 6-3 6-2
[2023] J200ISTRES 4-6 6-3 6-4

Rafael Botran Neutze (2-0)

[2023] J300BRADENTON 6-3 6-0
[2023] J500PLANTATION 6-1 6-4

Match Details

2023 J500Plantation

W	1R	Ivan Ivanov	6-4 4-6 6-1
W	2R	Rafael Botran Neutze	6-1 6-4
L	3R	Alexander Frusina	4-6 4-6

2023 J300Bradenton

W	1R	Rafael Botran Neutze	6-3 6-0
L	2R	Ivan Ivanov	6-2 2-6 2-6

2023 J300Sanxenxo

W	1R	Vit Kalina	6-3 6-0
W	2R	Roger Pascual Ferra	6-7 6-3 6-2
L	QF	Carlo Alberto Caniato	3-6 1-6

2023 J300Collegepark

W	2R	Danil Panarin	6-2 1-6 6-2
L	3R	Charlie Robertson	4-6 6-2 3-6

2023 J300Bamberg

W	2R	Zachary Viiala	6-4 6-4
W	3R	Pedro Rodrigues	7-5 6-4
W	QF	Diego Dedura-Palomero	6-2 6-4
W	SF	Marc Majdandzic	6-2 6-3
L	F	Luca Preda	1-6 3-6

2023 J300Charleroi-Marcinelle

W	2R	Nicolas Oliveira	6-4 6-3
W	3R	Hayden Jones	6-3 6-1
W	QF	Niels Ratiu	7-5 6-3
W	SF	Pavle Marinkov	7-5 6-1
L	F	Mees Rottgering	3-6 4-6

2023 J200Villach

W	1R	Jacob Olar	6-1 6-2
W	2R	Henry Bernet	6-3 6-3
L	QF	Keegan Rice	2-6 6-7

2023 J500Offenbach

W	1R	Amir Milushev	6-2 6-2
L	2R	Federico Bondioli	4-6 6-2 4-6

2023 J200Piestany

W	2R	Patrik Meszaros	6-2 7-6
W	3R	Michal Krajci	6-3 6-2
L	QF	Jan Hrazdil	4-6 6-3 2-6

2023 J200Istres

W	1R	Felix Balshaw	6-4 6-3
W	2R	Roger Pascual Ferra	4-6 6-3 6-4
W	QF	Jangjun Kim	6-0 6-4
W	SF	Ignacio Parisca	0-6 6-4 7-6
L	F	Paul Barbier Gazeu	5-7 1-6

2023 J300Villena

W	1R	Runkai Bai	6-2 6-0
W	2R	Sebastian Eriksson	6-0 3-6 6-3
L	3R	Alejandro Melero Kretzer	4-6 1-6

2023 J300Barranquilla

W	1R	Marcos Lee Chan Baratau	6-1 6-0
W	2R	Meecah Bigun	2-6 6-1 6-3
W	3R	Denis Petak	6-3 6-3
W	QF	Henry Searle	6-3 7-6
L	SF	Mees Rottgering	3-6 7-5 3-6

2023 J300Sanjose

W	1R	Cyrus Mahjoob	1-6 6-4 6-2
L	2R	Henry Searle	1-6

2023 J200Bratislava

W	1R	Patrick Jozwicki	6-4 6-1
L	2R	Petr Brunclik	3-6 2-6

2022 J3Aizkraukle-2

W	1R	Ludvig Hede	6-1 6-1
W	2R	Markus Molder	7-6 6-4
W	QF	Gustavs Dambins	6-2 6-0
L	SF	Filip Hanzelin	2-6 2-6

2022 J3Trnava-2

W	1R	Andriy Poritskyy	6-2 6-1
W	2R	Trisztan Gubi	6-2 6-2
W	QF	Gustavs Dambins	6-2 6-4
L	SF	Michal Krajci	6-7 7-5 2-6

2022 J4Heiveld

W	1R	Antoni Kosyrz	6-0 6-2
W	2R	Neo Ip	6-4 4-6 6-2
W	3R	Raphael Vaksmann	1-6 6-3 6-1
W	QF	Pepijn Bastiaansen	6-3 6-3
W	SF	Adam Dellala	6-3 4-6 6-1
L	F	Mees Rottgering	4-6 5-7

2022 J2Szekesfehervar

W	1R	Zoran Ludoski	6-4 6-1
L	2R	Norbert Marosik	3-6 3-6

2022 J3Barcelona-2

W	1R	Pau Bosch Munoz	6-2 6-2
L	2R	Mateo Luis Alvarez Sarmiento	7-6 4-6 3-6

2022 J3Barcelona

W	1R	Javier Gonzalez	6-1 6-2
L	2R	Daniele Rapagnetta	2-6 6-3 2-6

2022 J2Renningenrutesheim

W	1R	Julian Alonso	6-4 6-3
W	2R	Adriano Dzhenev	6-2 3-6 6-0
L	QF	Nikola Zekic	4-6 2-6

2022 J2Basel

W	1R	Lorenzo Sciahbasi	7-6 2-6 7-5
L	2R	Patrick Schoen	6-4 6-7 4-6

2022 J3Neunkirchen

W	2R	Emilio Zielkowski	6-1 6-0
L	3R	Fadi Bidan	2-6 1-6

2022 J2Hannover

W	1R	Gabriel Matuszewski	3-6 6-4 6-1
L	2R	Edward Winter	3-6 6-7

2022 J4Skopje

W	2R	Philip Kamara	6-0 6-1
W	3R	Louis-Lou Langenaken	6-4 6-2
L	QF	Niksa Arsic	6-3 6-7 4-6

2022 J4Telde

W	1R	Keoni Puig Mccallan	7-5 4-6 6-3
W	2R	Andres Santamarta Roig	6-4 6-2
W	QF	Isaac Lopez Perez	3-6 6-4 7-6
L	SF	Felipe Virgili Berini	2-6 4-6

2022 J4Hamburg

W	2R	Valentin Faure	6-3 5-7 6-3
W	3R	David Petrovic	6-2 1-0
L	QF	Norbert Marosik	1-6 2-6

2022 J4Gjovik

W	1R	Nicolai Budkov Kjaer	6-3 6-1
W	2R	Janis Graski	7-6 6-0
W	QF	Cornelius Alexander Shalmi	6-2 6-2
W	SF	Massimo Giunta	7-6 6-1
L	F	Gabriele Vulpitta	6-7 3-6

2022 J4Esch-Alzette

W	1R	Noe Plique	6-1 6-2
W	2R	Nikola Puntaric	6-2 6-0
W	QF	Zian Vanderstappen	6-3 6-3
W	SF	Alex De Gabriele	6-4 6-2
L	F	Romain Gales	2-6 2-6

2022 J5Gent

W	1R	Robin De Groote	6-2 6-2
W	2R	Romain Andres	6-3 6-4
W	QF	Lars Wagenaar	6-4 3-6 6-3
L	SF	Nikola Djosic	3-6 4-6

Junior Tennis Database is a site that summarizes the results of ITF junior tennis tournaments.
Number of registered tournaments: 9232, Number of registered players: 5,739, Number of registered results: 303,630