Lasse Rosenboom
Lasse Rosenboom is a German professional footballer who plays as a defender for Holstein Kiel.
As a youth player, Rosenboom joined the youth academy of TuS Holtriem. Stints at the youth academies of JFV Norden and JFV Nordwest followed, before he joined the youth academy of Bundesliga side Werder Bremen at the age of fifteen. He started his senior career with the club's reserve team, making fifty-two league appearances and scoring two goals. However, he suffered relegation to the fifth tier while playing for them. In 2023, he signed for German 2. Bundesliga side Holstein Kiel, helping the club achieve promotion to the Bundesliga.
From 2018 to 2019, Rosenboom played for the Germany national under-16 football team and the Germany national under-17 football team. Altogether, he made ten appearances while playing for the Germany national under-16 football team and the Germany national under-17 football team, including at the 2019 UEFA European Under-17 Championship, where Germany was unable to reach the knockout stage.