Arguably the most anticipated rematch in UFC history takes place next week in Las Vegas.
Middleweight champion Anderson Silva, considered the top pound-for-pound fighter in the sport, puts his belt on the line against top contender and arch rival Chael Sonnen at UFC 148.
In anticipation of a pay-per-view event that UFC officials are calling one of the biggest sporting events of 2012, the promotion recently announced that fans are invited to open workout sessions for the fighters, as well as a pair of press conferences.