Welcome to our live coverage of UFC 81 from the Mandalay Bay Events Center in Las Vegas.

PRELIMINARY FIGHTS

Rob Emerson vs. Keita Nakamura is up first. Rob Emerson defeated Keita Nakamura via Split Decision (30-27 Emerson, 29-28 Nakamura, 30-27 Emerson).

Marvin Eastman defeated Terry Martin via Unanimous Decision (29-28, 30-27, 30-27)

Tim Boetsch defeated David Heath by via ref stoppage (strikes) in Round 1.

Chris Lytle defeated Kyle Bradley via TKO in seconds in the first round.

MAIN CARD

Tyson Griffin vs. Gleison Tibau
Round 1 The two exchanged punches with Griffing getting the better of it before Tibau took Griffin down to the ground. It was an exciting and competitive round, I'd go 10-9 for Griffin.

Round 2 Tibau connected with some good punches and took Griffin to the ground again. They got back up shortly. They continued to trade punches. Griffin was swinging wildly and then taken back down before getting back up again as the horn sounded. I'd score it 10-9 for Tibau.

Round 3 Tibau took Griffin to the ground again. Griffin hit some great body shots before Tibau took him down again, only for Griffin to get back up. Pace was slower this round. They were pressed up against the cage for the last minute of the round before they broke and the horn sounded. I'd score it 10-9 for Tibau.

Winner: All judges scored the fight 30-27 for Tyson Griffin.

Ricardo Almeida vs. Rob Yundt
Round 1 Almeida took Yundt down early in the round, landed a punch and got a guillotine On Yundt, causing Yundt to tap.

Winner: Ricardo Almeida via submission in Round 1

Jeremy Horn vs. Nate Marquardt
Round 1 Marquardt took Horns down early and was in Horns' guard. Marquardt hit some hard shots while on top. They got back up with 3 minutes left only for Marquardt to take Horn back down. Marquardt continued to dominate Horn. Horn almost got a couple of submissions in before the round ended. I'd still score it 10-9 for Marquardt.

Round 2 Marquardt slipped early in the round and Horn took control. Marquardt got a standing guillotine on Horn and submitted Jeremy Horn.

Winner: Nate Marquardt via submission in Round 2

Brock Lesnar vs. Frank Mir is up next. They are showing the Tim Boetsch - David Heath fight first from earlier in the night.

Brock Lesnar vs. Frank Mir
Mir came in first. Lesnar got a lot of booes coming out. Kurt Angle and The Undertaker were shown in the audience. "Stone Cold" Steve Austin was shown to a big response from the crowd. Rena "Sable" Mero, Lesnar's wife, was also shown.