Seweryn Gancarczyk

Gancarczyk started to play football in his early teens, in junior teams of Podkarpacie Pustynia. After several seasons there and after a short spell at second division club Hetman Zamość, Gancarczyk made his way to the capital of Ukraine, Kyiv, where he joined local Arsenal Kyiv. Having also briefly performed for west Ukrainian club Volyn Lutsk, Gancarczyk was transferred to Metalist Kharkiv, where he has remained since, and has reached a position of vice-captain at the club. In 2007, he was voted the best left-back in Ukraine. During the winter of 2008, Gancarczyk had a try-out with Scottish club Celtic, however due to an injury, he was unable to compete and so returned to Metalist. In January 2018, Gancarczyk joined Rozwój Katowice. He played for the club until the summer 2019, when he joined Podlesianka Katowice.

Debuting for his country in 2006 in a 0–1 loss against Lithuania, the defender was named to the 23-men squad for the 2006 FIFA World Cup in Germany. On 14 October 2009, during Poland's last game of the 2010 FIFA World Cup qualifiers against Slovakia, Gancarczyk scored an own goal in the 3rd minute of the game, condemning Poland to a 1–0 defeat and enabling Slovakia to qualify for the World Cup.

While still playing for Podlesianka, Gancarczyk began coaching youth teams of Rozwój Katowice. On 7 June 2022, he joined I liga club Górnik Łęczna's staff as an assistant under Marcin Prasoł. He left the club on 25 February 2023 along with Prasoł. In April 2023, he took charge of IV liga Silesia club Unia Turza Śląska until the end of the season, replacing the outgoing Ryszard Wieczorek who joined the club only the month prior. Gancarczyk led the club to winning both their group and the promotion play-offs. His contract was not extended, and he was replaced by returning Marek Hanzel, who initially left the club in late February for health reasons. On 17 January 2024, Gancarczyk was hired as an assistant coach at another second division side Zagłębie Sosnowiec, where he worked under managers Alyaksandr Khatskevich and Marek Saganowski. He terminated his contract by mutual consent on 12 June that year. On 7 August 2024, Gancarczyk returned to Górnik Zabrze to take up the role of an assistant for their reserve and under-17 teams. On 7 January 2025, he was promoted to the role of Górnik II's head coach. On 15 April 2025, following the appointment of Piotr Gierczak as manager of Górnik's senior team, Gancarczyk joined his staff as an assistant.

International