Prinz began her career at SV Dörnigheim FC. She made her Bundesliga debut for FSV Frankfurt, where she played from 1993 to 1998. During that time Prinz won two Bundesliga titles and two German Cups. In 1997 and 1998 she was the Bundesliga top scorer. In 1998, she moved to local rivals 1. FFC Frankfurt, where she has had her biggest success at club level. In 13 seasons at the club, Prinz won six Bundesliga and eight German Cup titles. She also won the Bundesliga top-scorer award twice more in 2001 and 2007. Prinz won the UEFA Women's Cup three times with Frankfurt, in the 2001–02, 2005–06 and 2007–08 seasons. She also reached the final in 2004, but lost to the Swedish side Umeå IK. For two seasons, Prinz joined Carolina Courage in the professional women's league WUSA in the United States. During her short stint in America she claimed the 2002 WUSA Championship. After the 2003 World Cup, Prinz declined an offer from AC Perugia to play in Italy's men's Serie A, fearing her transfer would be used as a publicity stunt and she would end up on the bench. In her time at FFC Frankfurt, Prinz won many personal awards, including a record eight German Female Footballer of the Year awards from 2001 to 2008. She was named the FIFA World Player of the Year in 2003, 2004 and 2005. For four consecutive years from 2007 to 2010 she came second, behind Brazil's Marta.
International
At the age of 16, Prinz made her debut for Germany's national team in July 1994 against Canada. She came on after 72 minutes and scored the game-winner in the 89th minute. One year later, she won her first major title at the 1995 European Championship, scoring in the final. In the same year, she was named to Germany's squad for the 1995 FIFA Women's World Cup, where they lost to Norway in the final match. She remains the youngest player ever to appear in a World Cup Final. For the next decade, Prinz had one of the most successful international careers in women's football. She won four more UEFA European Championships in 1997, 2001, 2005 and 2009. At the Summer Olympics she won bronze three times with the German team, in 2000, 2004 and 2008. At the 2003 FIFA Women's World Cup, Prinz helped Germany win its first World Cup title in the women's game. She was honoured as the tournament's best player and top-scorer. Prinz became the women's national team captain at the end of 2003, and remained until her retirement. Four years later, at the 2007 FIFA Women's World Cup, she captained the team to Germany's second World Cup title; she was awarded the Silver Ball as the second-best player at the tournament. Prinz holds several national and international records. With 14 goals, she is the second all-time leading goalscorer at FIFA Women's World Cups. From 2008 until 2012, Prinz and Brazil's Cristiane both held the tournament record of 10 goals at the Summer Olympics, although Cristiane has now surpassed Prinz. For the German national team Prinz appeared 214 times and scored 128 goals, and is the team's most capped player and top goalscorer.
Statistics at World Cup and Olympic Tournaments
Prinz competed in five FIFA Women's World Cup: Sweden 1995, USA 1999, USA 2003, China 2007; and Germany 2011; and four Olympics: Atlanta 1996, Sydney 2000, Athens 2004, and Beijing 2008. Altogether she played in 43 matches and scored 24 goals at those nine global tournaments. With Germany, Prinz is a two-time world champion from USA 2003 and China 2007, and a runner-up from Sweden 1995, as well as a three-time bronze medalist from Sydney 2000, Athens 2004 and Beijing 2008.
Private life
Prinz is a trained physical therapist. In 2010, she graduated with her master's degree in psychology from the Goethe University Frankfurt. Since January 2012, she has worked as a sport psychologist in the youth academy, women's U-17 and women's Bundesliga teams at TSG 1899 Hoffenheim.