If you want to count where guys played in college, as opposed to where they grew up, the list grows:
Larry Stewart also played at Coppin State (but was from Philly IIRC)
Gene Shue (B More guy who coached the team when it was in B More), John Lucas, Tom McMillan, Lawrence Boston, Laron Profit, Steve Blake, Lonny Baxter, Juan Dixon are all UMCP guys who were Bullets/Wizards. (I looked up three or four I'd forgotten about or who were before my time.)
http://www.basketball-reference.com/fri ... e=marylandJahidi White went to Georgetown (however, he came from St. Louis, MO -- I remember because I lived near there back when he, Larry Hughes, and Darius Miles were all local HS or college ballers. Chris Carawell of Duke went the same HS as Jahidi IIRC. Darius Miles, along with LaPhonso Ellis are actually from across the river in E. St Louis, IL.).
Tre Johnson is the future of the Wizards.