Sergio Martinez

LAS VEGAS, NV - SEPTEMBER 15: Sergio Martinez (R) lands a left to the chin of Julio Cesar Chavez Jr. in the tenth round of their WBC middleweight title fight at the Thomas & Mack Center on September 15, 2012 in Las Vegas, Nevada. (Photo by Jeff Bottari/Getty Images)

Commission Delays Chavez Drug Hearing

The Nevada Athletic Commission has delayed a hearing for boxer Julio Cesar Chavez Jr. over a failed drug test.