Manny Pacquiao concentrates during his WBO welterweight title match against Timothy Bradley on June 9 at the MGM Grand Arena in Las Vegas, Nevada. In what is being viewed as one of the worst outcomes in boxing history, the unbeaten Bradley ended Pacquiao's long unbeaten run with a split decision victory,despite some experts believing Pacquiao had won in a landslide.

Manny Pacquiao (left) finally gets his welterweight championship bout against Timothy Bradley underway. There was a significant delay before the bout, reportedly due to Pacquiao refusing to fight until the Heat/Celtics Game 7 had concluded. The fight didn't start until 12:10am ET because of it.

Manny Pacquiao rests in his corner following the 11th round of his WBO welterweight title fight against Timothy Bradley. Pacquiao seemed to be well ahead on points going into the last round. Little did anyone know that wasn't the case.

Manny Pacquiao landed more than 200 shots to Timothy Bradley in their WBO world welterweight title fight on Saturday, though the judges still found a way to give Bradley the win at the MGM Grand in Vegas.

Manny Pacquiao's constant barrage of left jabs and combination body shots had Timothy Bradley backing up most of the night, yet Bradley was still awarded the victory despite landing nearly 100 punches less than the PacMan and connecting just 19 percent of his shots, while Pacquiao landed 34 percent.

Timothy Bradley attacks Manny Pacquiao on the ropes during their WBO welterweight title fight at the MGM Grand Arena on Saturday. Unbeaten Bradley ended Pacquiao's long unbeaten run in a highly controversial, unpopular split decision victory over the Filipino ring icon.

Manny Pacquiao knocks Timothy Bradley backward early in their fight. Bradley improves to 29-0 with 12 KOs with his disputed loss while Pacquiao falls to 54-4-2.

Timothy Bradley and Manny Pacquiao pose for the cameras following Bradley's upset over the WBO welterweight champion. The unbeaten Bradley, despite being outpunched significantly over 12 rounds, somehow won a split decision to capture the belt, though Manny took it in stride, staying around long enough afterward to work the crowd and the media.

Someone from above must have been looking down on Timothy Bradley, who won an unbelievably controversial split decision over Manny Pacquiao to win the WBO welterweight belt Saturday in Las Vegas.

Timothy Bradley may have been a controversial winner, but that didn't keep him from proudly sporting the championship belt after the fight.

Jorge Arce lies in pain after his bantamweight fight against Jesus M. Rojas was stopped in the second round Saturday in Las Vegas. The bout was declared a no-decision.

Jesus Rojas stands in the ring after his fight against Jorge Arce was declared a no-contest due to an unintentional foul on Rojas in the second round.

Jesus Rojas lands a left to the head of Jorge Arce before their featherweight fight at MGM Grand Garden Arena was stopped in the second round and declared a no-decision.

Randall Bailey can't keep from crying after walking away with the IBF welterweight title Saturday night thanks to an 11th-round knockout shocker over Mike Jones.

Mike Jones' nose couldn't take any more pounding after suffering a surprise knockout loss to Randall Bailey during their IBF welterweight title fight at MGM Grand Garden Arena in Las Vegas.

Despite being behind on all three judges' scorecards at the time, Randall Bailey stuns Mike Jones with an 11th round knockout victory to take home the vacant IBF welterweight belt Saturday night at the MGM Grand Arena in Las Vegas.

Randall Bailey (left) exchanges blows with Mike Jones in their fight for the vacant IBF welterweight championship at the MGM Grand Arena on Saturday night in Las Vegas. The veteran Bailey scored an 11th-round knockout victory over the undefeated Jones, who many predicted would win.

Guillermo Rigondeaux celebrates with his corner and a couple blonde beauties after defeating Teon Kennedy during his super bantamweight championship fight at the MGM Grand Garden Arena.

Guillermo Rigondeaux (right) retained his super batamweight title with an impressive performance against challenger Teon Kennedy. Rigondeaux, a Cuban defector now living in Miami, dropped Kennedy five times before the fight was finally stopped at 1:11 of the fifth round.

Guillermo Rigondeaux throws a huge punch at the challenger Teon Kennedy during their super bantamweight championship bout at the MGM Grand Garden Arena. Rigondeaux won the fight after knocking Kennedy out in the fifth round.