Lasse Poertner

2023

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

Nation

GER

Age

19 years old (born in 2005)

World Ranking

ATP Ranking　865th

Year-end Junior World Ranking

Rival

Michal Krajci (2-0)

[2023] J200PIESTANY 6-3 6-2
[2023] J200STPOELTEN 6-0 6-4

Henry Searle (1-1)

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

Roger Pascual Ferra (2-0)

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

Rafael Botran Neutze (2-0)

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

Ivan Ivanov (1-1)

[2023] J300BRADENTON 6-2 2-6 2-6
[2023] J500PLANTATION 6-4 4-6 6-1

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 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

Junior Tennis Database is a site that summarizes the results of ITF junior tennis tournaments.
Number of registered tournaments: 9482, Number of registered players: 4,990, Number of registered results: 217,154