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About Greg Colby
- Greg Colby (born February 25, 1952) is an American football coach.
- He was the defensive coordinator at Central Michigan University from 2015 to 2018.
- Colby served as the head football coach at Millersville University of Pennsylvania from 2008 to 2012, compiling a record of 11–44.
- He was the defensive coordinator at Kent State University from 1998 to 2001 and at Northwestern University from 2002 to 2007.
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