Don Zimmerman has over 31 years of experience in coaching lacrosse and has been a Division I college head coach for over 25 years. Coach Zimmerman's career has taken him to Princeton University, the University of North Carolina, Johns Hopkins University, Loyola University Maryland, and the University of Maryland at Baltimore County (UMBC), a position he has held since 1994. Zimmerman was instrumental in winning NCAA national championships at North Carolina (1981 and 1982) and Johns Hopkins (1984, 1985, and 1987). He led the UMBC Retrievers to four consecutive NCAA Division I tournament appearances from 2006 to 2009, a feat accomplished for the first time in the school's Division I lacrosse history. Zimmerman is considered one of the preeminent teachers of the game and has taught lacrosse on four continents: North America, South America, Europe, and Asia. In 2002 he was honored with induction into the Greater Baltimore Chapter of the United States Lacrosse Hall of Fame. Zimmerman was named America East Conference Coach of the Year by his colleagues in both 2008 and 2009 and was the 2008 Coach of the Year in LaxPower men's lacrosse Fan Awards. He achieved career win 200 in 2010 and is 10th among active coaches with 202 victories in 24 campaigns.

Zimmerman lives in Baltimore, Maryland. Peter England was a member of Coach Zimmerman's staff at John Hopkins University. Since 1991 he has been an advanced team scout for the Johns Hopkins lacrosse program, working with coaches Tony Seamon (1991-1998), John Haus (1999-2000), and Dave Pietramala (2001-present). England lives in Glen Burnie, Maryland.