Decklists and metagame breakdowns for Friday's and Sunday's sanctioned Vintage side events can be found in the link below. Sadly I was judging the main event on Saturday so I didn't get any decklists for that event. Hope you enjoy!

http://www.numotgaming.com/vintage-gp-la/

Thanks for posting the results. Saturday's 5-player round robin top deck at 3-1 was piloted by Joey Ruiz who just emailed me his Dark Petition Storm list:

Dark Petition Storm -- Joey Ruiz (3-1)
Lands
1 x Swamp
1 x Badlands
1 x Bloodstained Mire
1 x Library of Alexandria
4 x Polluted Delta
1 x Tolarian Academy
3 x Underground Sea
1 x Island
Spells
1 x Cabal Therapy
1 x Thoughtseize
1x Chain of Vapor
4 x Dark Petition
1 x Demonic Tutor
4 x Duress
4 x Gitaxian Probe
1 x Mind's Desire
1 x Ponder
1 x Tendrils of Agony
1 x Time Walk
1 x Timetwister
1 x Wheel of Fortune
1 x Yawgmoth's Will
1 x Ancestral Recall
1 x Brainstorm
2 x Cabal Ritual
4 x Dark Ritual
1 x Hurkyl's Recall
1 x Preordain
1 x Vampiric Tutor
1 x Black Lotus
1 x Lion's Eye Diamond
1 x Lotus Petal
1 x Mana Crypt
1 x Mana Vault
1 x Mox Emerald
1 x Mox Jet
1 x Mox Pearl
1 x Mox Ruby
1 x Mox Sapphire
1 x Sol Ring
1 x Necropotence
1 x Yawgmoth's Bargain

Sideboard
2 x Hurkyl's Recall
3 x Ancient Tomb
4 x Defense Grid
1 x Empty the Warrens
1 x Mindbreak Trap
4 x Ravenous Trap

The other decks on Saturday were UW Control, 5C Humans, Merfolk, and Eldrazi Shops.

I would also like to add a thanks to William Dayton whose Ravaged Thoughts deck did great on Sunday.