Date of Birth: 
About Bill Tierney
- William G.
- Tierney (born September 26, 1952) is an American lacrosse coach who currently heads the men's lacrosse team at the University of Denver.
- He is a devout Catholic.
- Tierney is the first college lacrosse coach to win an NCAA DI Championship west of the Eastern Time Zone.
- He has coached seven NCAA DI championship teams, including six at Princeton University and one at the University of Denver.
- Tierney's teams have had a combined winning percentage of .750.
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