Mary Anne McMullen begins her 12th season as the head coach of the Olivet College women's tennis team in 2012.

Over the last 11 years, McMullen has helped build the Comets into a solid program. In 2004, Olivet won six matches. The biggest win was 6-3 over Alma College, which snapped a 104-match losing streak in Michigan Intercollegiate Athletic Association (MIAA) play. In 2005, McMullen's Comets bettered the 2004 win total by three with nine victories. In addition, Olivet had a player earn All-MIAA honors for the first time in school history. In 2006, the Comets won eight matches. In 2007, Olivet won a school-record 10 matches. Under her tutelage, Rachel Vilums became a three-time All-MIAA player. In 2009, the Comets tied their school record with 10 wins. In 2010, Olivet posted a 9-8 record for the first winning season in school history.

McMullen earned a bachelor's degree in sociology and anthropology from Olivet in 2001. While a student, she was a member of the golf and tennis teams.