Shane Carwin vs. Roy Nelson Set for UFC 125

According to MMA Junkie:

The event was formally announced during today's new "UFC Ultimate Insider" episode.

Top-ranked heavyweights Shane Carwin and Roy Nelson will meet in the co-main event of the New Year's Day show.

Shane Carwin (12-1)
Loss Brock Lesnar - Submission (Arm-Triangle Choke) UFC 116
Win Frank Mir - KO (Punches) UFC 111
Win Gabriel Gonzaga - TKO (Punches) UFC 96

Roy Nelson (15-5)
Loss Junior dos Santos - Decision (Unanimous) UFC 117
Win Stefan Struve - TKO (Punches) UFC FN 21
Win Brendan Schaub - KO (Punch) TUF 10 Finale

Jan 1st, live on Pay-per-view from Las Vegas, Nevada:

- Frankie Edgar +125 vs. Gray Maynard -155 [LW title]
- Shane Carwin vs. Roy Nelson
- Clay Guida vs Takanori Gomi
- Chris Leben vs. Brian Stann
- Thiago Silva vs. Brandon Vera
- Nate Diaz vs. Dong Hyun Kim
- Phil Baroni vs. Brad Tavares
- Antonio McKee vs. Jacob Volkmann