As the clock ticks away towards Alistair Overeem’s (Pictured) highly-anticipated big league debut, the former Strikeforce heavyweight champ remains a steady -150 odds-on favorite to beat Brock Lesnar in UFC 141‘s main event.

Lesnar, on the other hand, checks in as a slight +120 underdog.

Of interesting note, Donald Cerrone has dropped to a -285 favorite to collect his fifth consecutive victory of 2011. The “Cowboy” was pegged at -325 just last week.

Diaz is a +225 longshot to snap Cerrone’s torrid run in the card’s co-featured attraction.

The MGM Grand Garden Arena in Las Vegas, Nevada hosts tonight’s shootout.

Here are the updated wagering lines for tonight (Courtesy of Bovada):

Favorites (-) Underdogs (+)

Preliminary Bouts:

Diego Nunes -260
Manny Gamburyan +200

Matt Riddle -130
Luis Ramos EVEN

Jacob Volkmann -275
Efrain Escudero +215

Dong Hyun Kim -380
Sean Pierson +290

Danny Castillo -185
Anthony Njokuani +150

Ross Pearson -300
Junior Assuncao +230

Main Bouts:

Nam Phan -230
Jim Hettes +180

Alexander Gustafsson -325
Vladimir Matyushenko +250

Jon Fitch -250
Johny Hendricks +195

Donald Cerrone -285
Nate Diaz +225

Alistair Overeem -150
Brock Lesnar +120