 In the summer of 2003, Miller made a move to 2.Bundesliga side Karlsruher SC, but failed to make a single first-team appearance in his first season with the club.However, he became the club's first-choice goalkeeper for the 2004–05 season and made his professional debut on 7 August 2004 in KSC's 1–1 home draw to Wacker Burghausen in the 2.