Manny Pacquiao, left, of the Philippines, throws a left at Timothy Bradley during the WBO welterweight title boxing bout Saturday, April 12, 2014, in Las Vegas. (AP Photo/Eric Jamison)
Manny Pacquiao, left, of the Philippines shields himself as Timothy Bradley throws a punch during the WBO welterweight title boxing fight Saturday, April 12, 2014, in Las Vegas. (AP Photo/Eric Jamison)
Manny Pacquiao, right, of the Philippines, drives Timothy Bradley down into the ropes in their WBO welterweight title boxing bout Saturday, April 12, 2014, in Las Vegas. (AP Photo/Isaac Brekken)
Manny Pacquiao, right of the Philippines, talks with trainer Freddie Roach during a WBO welterweight title boxing fight against Timothy Bradley on Saturday, April 12, 2014, in Las Vegas. (AP Photo/Eric Jamison)
Manny Pacquiao, right, of the Philippines, throws a right at the head of Timothy Bradley during the WBO welterweight title boxing fight Saturday, April 12, 2014, in Las Vegas. (AP Photo/Eric Jamison)
Manny Pacquiao, left, of the Philippines, evades a punch from Timothy Bradley in their WBO welterweight title boxing fight Saturday, April 12, 2014, in Las Vegas. At right is referee Kenny Bayless. (AP Photo/Isaac Brekken)
Timothy Bradley, leans back as Manny Pacquiao, of the Philippines, throws a punch during their WBO welterweight title boxing fight Saturday, April 12, 2014, in Las Vegas. (AP Photo/Isaac Brekken)
Timothy Bradley, right, loses his footing in front of Manny Pacquiao, of the Philippines, in their WBO welterweight title boxing fight Saturday, April 12, 2014, in Las Vegas. (AP Photo/Isaac Brekken)
Timothy Bradley, left, lands a left to the head of Manny Pacquiao, of the Philippines, in their WBO welterweight title boxing fight Saturday, April 12, 2014, in Las Vegas. (AP Photo/Eric Jamison)