After much debate young hopeful Łukasz Woszczyński was chosen to partner Śliwiński. At their first major competition together they finished in fourth place at the 2003 World Championships in Gainesville, Georgia, United States (where the 1996 Olympic canoeing events took place on Lake Lanier.). In 2004 they became C-2 1000 m European champions in front of their home crowd in Poznań. At the Athens Olympics they finished seventh in the C-2 1000 m final, the exhausted Woszczynski collapsing at the end of the race.