Well, my black deck was missing 3 Sinkholes and Yawgmoth's Will, so I put in 4 Scutas and a Necropotence instead. I also didn't have wastelands, so Mishra's Factories replaced them. They ended up being a good choice, though. I wasn't sure of the field. Anyways, here's the report (decklist at the end):

It was 4 matches, then the top 4 highest records would battle for 1st, 2nd, and 3rd. So there was 4 matches first and there was 12 people:

Round 1 vs Suicide Black Win 2-0:
Game I:
I got out first hyppie and then negator. He played some disruption but sol ring and mind twist kept him low. I won by round 6.
Game II no sideboard changes:
A first turn duress and then a couple Scutas, he plays a disk but never gets to use it.

Round 2 vs blue/white control:
Game 1:
It was a cool deck with some legends, but too slow. He counters some of my stuff but factories, orders, and negators (along with 2 hymns) wins.
Game 2 no sideboard:
First turn hyppie, second turn hymn, third turn Necro and then followed by creatures and a mind twist.

Third match was black and white deck with white for vindicate, balance, and deso angel. I win 2-0.

Game 1:
First turn ritual, duress, and hym. 3 orders and a necropotence win quickly.
Game 2:
He balances and deso almost kills me, but 2 beasts via necro (tutor) gets him to 0.

I had 1 round left, and so far I was undefeated so I was guarenteed a place in the top 4, but if I got 1st then I go vs 4th, which would be easier. It was vs a keeper player with maindeck moat and 2 stp, but I still kept my undefeated victory winning 2-0.

Round 1:
First turn hyppie, 2nd turn hymn, I think sol ring and mind twist with ritual, so I get him to 0 cards and then he kills my hyppie and drops moat. I tutor out hyppie, though, and win (had earlier order beatdown too).

Round 2 sideboard in null rod:
Two negators and a lot of discard + necro=win.

So now I was 8-0 and 1st. My next match was vs blue control, so I had a pretty good chance of winning. I did win, 2-1.

1st Round:
PW Beast 1st turn and edict to his creature (masticore i think) and then a couple orders win. I have a struggle at the end since he control magics my stuff, but Necro gets me down to 2 and I play 2 edicts and a negator and win next turn
2nd Round:
Second turn Scuta and Hyppie are both control magiced, I draw nothing good and lose.
3rd Round:
I duress 3 times (1st and 2nd turn) and then sinkhole. 4th turn I play a scuta and win.

Now I was playing for 1st, if I lost I'd still get 2nd. I was playing the keeper player from earlier. I won 2-1

Game 1:
A first turn lotus+moat and he counters my hyppies and demo. tutor, not much to say. After a while he recalls 2 morphlings and I die.
Game 2:
A first turn duress and second turn hymn pretty much gets rid of his counters, soon allowing 3 hyppies and a scuta to win.
Game 3:
Very close match up, lots of creatures, dieng, abyss, morphling, edict, ect. I finally win with 2 factories after using Dystopia to kill Moat.

I got 8 boosters. Spectral Lynx, some tapland from oddysey, and a foil deployment was pretty good, the rest was all good stuff but nothing special.

Decklist:
Creatutres:
4 Phyrexian Scuta
4 Phyrexian Negator
4 Order of the Ebon Hand
4 Hypnotic Specter
3 Phyrexian War Beast
Spells:
4 Hymn to Tourach
4 Duress
4 Dark Ritual
3 Diabolic Edict
1 Sinkhole
1 Demonic Tutor
1 Necropotence
Land:
20 Swamp
2 Mishra's Factory
1 Strip Mine
1 Sol Ring
Sideboard:
1 Zuran Orb
1 Soldevi Digger
1 Juggernaut
2 Thrashing Wumpus
1 Terror
2 Powder Keg
1 Null Rod
1 Nevinryyal's Disk
1 Drain Life
(I know it wasn't finished)

=)