MMA Ring Report learned that Rob Macdonald of "The Ultimate Fighter 2" fame is rumored to have a change of opponent. His original opponent Seth Petruzelli is rumored to be out and Jason Lambert is set to take his place in a fight that will take place at 205 pounds. Both Petruzelli and MacDonald both competed in TUF season 2 in the heavyweight division but were set to compete in a Lightheavyweight contest in their first UFC bouts. The fight is set to take place on March 4th in Las Vegas Nevada on UFC 58 "Canada vs. USA" The rumored card for UFC 58 is below. Card subject to change.

David Loiseau vs. Rich Franklin
Georges St. Pierre vs. BJ Penn
John Alessio vs. Diego Sanchez
Rob MacDonald vs. Jason Lambert
Nathan Marquardt vs. Joe Doerksen
Sam Stout vs. Kenny Florian
Mike Swick vs. Steve Vigneault
Mark Hominick vs. TBA
Krystof Midoux vs. Tom Murphy