It's the fourth day of March MMAdness, my cockamamie idea for what would happen if we could have a 64-man openweight MMA tournament. That means that after our eight fights today, we're down to the Sweet 16.
West Region
1. Josh Barnett beat 9. Paul Buentello by split decision
5. Gabriel Gonzaga beat 4. Alistair Overeem by third-round submission (arm bar)
3. Quinton "Rampage" Jackson beat 6. Keith Jardine by unanimous decision
2. Anderson Silva beat 10. Marcio Cruz by second-round KO (knees)
Midwest Region
1. Brock Lesnar beat 8. Roy Nelson by second-round TKO (strikes)
5. Junior "Cigano" dos Santos beat 4. Shane Carwin by third-round KO (punch)
11. Semmy Schilt beat 3. Andrei Arlovski by second-round KO (kick)
2. Antonio Rodrigo Nogueira beat 7. Antonio Silva by first-round submission (rear naked choke)
Sweet 16
Fedor Emelianenko
Fabricio Werdum
Randy Couture
Rashad Evans
Frank Mir
Antonio Rogerio Nogueira
Tim Sylvia
Lyoto Machida
Josh Barnett
Gabriel Gonzaga
Quinton "Rampage" Jackson
Anderson Silva
Brock Lesnar
Junior "Cigano" dos Santos
Semmy Schilt
Antonio Rodrigo Nogueira
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