One year later, he joined Basel's first team during the Autumn of their 2004–05 season under head coach Christian Gross. After playing in ten test games Preisig played his first team debut for the club in the Swiss Cup game on 18 September 2004 as Basel won 4–0 against local amateur club FC Oberdorf.
A year after joining, he joined Basel's first team during their 2004-05 season under head coach Christian Gross. After playing in ten practice games, Preisig made his first team debut for the club in a Swiss Cup game on September 18, 2004, as Basel defeated FC Oberdorf 4-0.