*Club domestic league appearances and goals, correct as of 18:05, 25 October 2015 (UTC)[3] ‡ National team caps and goals, correct as of 20:12, 3 December 2012 (UTC)[2]
Müller had played at several smaller clubs at youth level, before joining the reigning German champions FSV Frankfurt in 1998. Because many of club's star players, such as Birgit Prinz and Sandra Smisek, had left that summer, Müller immediately became a regular starter and helped the team avoid relegation. After two years, she moved to SC 07 Bad Neuenahr, where she played for four seasons. In 2005, she joined VfL Wolfsburg, at a time when the club had just been relegated to the second division. With 36 goals, Müller was the second Bundesliga top-scorer the following season, helping Wolfsburg to achieve immediate promotion back to the German top flight.
On 13 April 2015 she announced that she would retire at the end of the 2014–15 season.[5][6]
International career
Müller made her debut for the German national team against the United States in July 2000. In the following years, she won several major titles with Germany, almost exclusively as a reserve player, often coming on as a late substitute. Müller won her first international trophy at the 2001 European Championship. Two years later, she was part of Germany's winning team at the 2003 FIFA Women's World Cup. She had three appearances and scored twice in the tournament.