The UFC officially has a new — and ferocious — welterweight contender. Matched against Neil Magny for his first UFC main event, Carlos Prates passed Saturday's test with flying colors, knocking out the record-setting veteran with a brutal punching assault in the closing seconds of round one at UFC Vegas 100.

The Octagon returns to Nevada for tonight's UFC Vegas 100 event, an eleven-bout fight card headlined by Neil Magny vs. Carlos Prates.

The main event is a welterweight battle between long-time veteran Neil Magny, in his 34th UFC bout, taking on rising contender Carlos Prates, in his fourth UFC bout and first main event. Magny is looking to halt the momentum of Prates, who is riding a ten-fight win streak, as Magny himself looks to get back into the win column.