During his first appearances in the titular eleven, he played left-back. After just two training sessions with the first team, coach Ottmar Hitzfeld gave Schweinsteiger his debut, at the age of 18, as a late substitute in a UEFA Champions League game against RC Lens in November 2002, and the youngster made an immediate impact, creating a goal for Markus Feulner within minutes. He signed a professional contract the following month and went on to appear in 14 Bundesliga games in 2002–03, helping Bayern to a league and cup double. The next season, he played 26 Bundesliga games. He scored his first Bayern goal against VfL Wolfsburg in September 2003.