Jungnickel only made three appearances in his first season with Cottbus – his debut came in March 2003 when he replaced Thomas Reichenberger in a 2–0 win over Schalke 04 – but made 23 appearances, mostly as a substitute, the next year, as the team finished bottom of the league.
Jungnickel made only three appearances in his first season with Cottbus – his debut came in March 2003 when he replaced Thomas Reichenberger in a 2–0 win over Schalke 04 – but made 23 appearances, mostly as a substitute, the next year, as the team finished bottom of the league.