Las Vegas

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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)

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Bryan Vasquez, left, from Costa Rica, drives Jose Felix Jr, of Mexico, against the ropes in their interim WBA super featherweight title boxing bout Saturday, April 12, 2014, in Las Vegas. (AP Photo/Isaac Brekken)

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Bryan Vasquez, from Costa Rica, celebrates following his 12-round unanimous decision over Jose Felix Jr., from Mexico, in their WBA interim super featherweight title boxing fight Saturday, April 12, 2014, in Las Vegas. (AP Photo/Eric Jamison)

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Bryan Vasquez, right, from Costa Rica, connects to the head of Jose Felix Jr., from Mexico, late in their WBA interim super featherweight title boxing bout Saturday, April 12, 2014, in Las Vegas. (AP Photo/Eric Jamison)

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Bryan Vasquez, right, from Costa Rica, follows through on a right against Jose Felix Jr., from Mexico, late in their WBA interim super featherweight title boxing bout Saturday, April 12, 2014, in Las Vegas. (AP Photo/Eric Jamison)

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Jessie Vargas, left, and Khabib Allakhverdiev, from Russia, trade blows in their WBA-IBO junior welterweight title boxing bout Saturday, April 12, 2014, in Las Vegas. (AP Photo/Isaac Brekken)

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Jose Felix Jr., right, from Mexico, connects with a left to the head of Bryan Vasquez, from Costa Rica, in their WBA interim super featherweight title boxing bout Saturday, April 12, 2014, in Las Vegas. (AP Photo/Eric Jamison)

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Khabib Allakhverdiev, left, from Russia, lands a left to the head of Jessie Vargas in their WBA-IBO junior welterweight title boxing bout Saturday, April 12, 2014, in Las Vegas. (AP Photo/Eric Jamison)