Oskar Czertowicz (born 9 February 2006) is a Polish handball player for SG Flensburg-Handewitt. Born in Poland, he moved with his family to Germany aged 4 when his father Lukasz signed a contract with Wilhelmshavener HV.
Career Czertowicz joined the youth team of Flensburg in 2021, displaying strong goalscoring abilities and made his debut for the senior team against Rhein-Neckar Löwen. During the 2023–24 season, he made more regular appearances, even scoring 5 goals in a EHF European League match against Kadetten Schaffhausen. He earned his first professional contract in December 2023.
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