Vampires
A Standard deck, by Cody Brewer
1st place at a tournament in Roanoke, Virginia, United States on 2010-04-25
As reported at http://www.starcitygames.com

Maindeck:

Creatures
3 Bloodghast (Not currently legal in Standard)
4 Gatekeeper of Malakir (Not currently legal in Standard)
3 Malakir Bloodwitch (Not currently legal in Standard)
4 Vampire Hexmage (Not currently legal in Standard)
4 Vampire Nighthawk (Not currently legal in Standard)
4 Vampire Nocturnus (Not currently legal in Standard)

Instants
3 Disfigure (Not currently legal in Standard)
4 Tendrils of Corruption (Not currently legal in Standard)

Sorceries
2 Grim Discovery (Not currently legal in Standard)
2 Mind Sludge (Not currently legal in Standard)
4 Sign in Blood (Not currently legal in Standard)

Basic Lands
15 Swamp

Lands
4 Marsh Flats (Not currently legal in Standard)
4 Verdant Catacombs (Not currently legal in Standard)

Sideboard:
1 Bloodghast (Not currently legal in Standard)
1 Malakir Bloodwitch (Not currently legal in Standard)
1 Disfigure (Not currently legal in Standard)
3 Deathmark (Not currently legal in Standard)
4 Duress
3 Marsh Casualties (Not currently legal in Standard)
2 Mind Sludge (Not currently legal in Standard)