It was in the 1999–00 season that he would get his big break, signing on a free transfer for Scottish champions Rangers from Dundee. He started off as a regular in the Rangers team, making 16 appearances up to and including a UEFA Cup tie against Borussia Dortmund on 7 December 1999, but didn't make any further appearances that season.[4] The following season he made 3 appearances in the league across October and November 2000, however these would be his last appearances for Rangers.[5] He had a loan spell at English club Wigan Athletic in 2001. In 2002 it was reported that he was suffering from depression.[6] Adamczuk retired in 2002,[7] then returned in 2006 to play for Pogoń Szczecin Nowa.