CARSON, CA - MARCH 16:  WBO welterweight champion Timothy Bradley (R) falls backwards against the ropes as he is knocked down by Ruslan Provodnikov, of Russia, in the closing seconds of the 12th round of their WBO welterweight  title boxing match under the supervision of referee as referee Pat Ruseell at The Home Depot Center on March 16, 2013 in Carson, California.  Bradley won in a narrow unanimous decision over Provodnikov to defend his WBO welterweight belt. (Photo by Kevork Djansezian/Getty Images)