She played first and third base for her high school softball team, and the Foothill Knights won the state and national titles in 2000.

Mann went to the UC Santa Barbara, alongside fellow WNBA player Lindsay Taylor, and graduated in 2005 with a degree in Women's Studies.

During the summer of 2003 Mann was a member of Team USA and helped win the gold medal in the inaugural FIBA World Championship for Young Women in Sibenik, Croatia.

After the 2008 season, Mann was signed by the Washington Mystics, who cited her "ability to stretch the defense with her three point shot, a very high basketball IQ, and a competitive work ethic" as the reasons why they had chosen to bring her on board.

Former Lynx teammates Lindsey Harding and Eshaya Murphy joined Mann for training camping prior to the 2009 season.