Anderson Silva opens as 5-2 favorite over Nick Diaz

This week online sports books began posting odds for the January 21st fight between Anderson Silva and Nick Diaz at UFC 183 in Las Vegas, NV.

When the lines first opened, Silva was listed as a 5-2 favorite and Diaz a 3-1 underdog, but the line has moved a bit since then. Silva now sits at -400 and Diaz +300 on the Bovada sports book, a Las Vegas based company.

For those unfamiliar with betting on mixed martial arts, a negative number reflects a favorite and a positive number, and an underdog. 

In this example, a $400 bet on Anderson Silva would net the bettor $100 whereas a $100 bet on Nick Diaz would net the bettor $300.

Anderson Silva is a former middleweight champion and still considered by many to be the greatest fighter of all-time, so the lines make sense. Also Nick Diaz is moving up in weight from welterweight to middleweight for the fight.