Hard Rock Hotel & Casino in Las Vegas - In a stunning upset, middleweight Chris Pearson (17-1, 12 KOs) knocked off unbeaten and top rated Yamaguchi Falcao (16-1, 7 KOs) with a ten round unanimous decision.

The scores were 97-93, 96-94 and 96-94 - with Pearson outworking and outboxing Falcao during crucial spots

It was the second time they met with, Pearson winning a decision over Falcao in 2011 as part of the World Series of Boxing.

Falcao was also a decorated amateur with an Olympic bronze medal in the 2012 London games at light heavyweight, a silver in the 2011 Pan American games and a bronze in the 2010 South American games.

Falcao had a previous defeat take place in his pro debut, when he was disqualified for brawling with his opponent after the second round had ended. But then both boxers ended up with a DQ, and the result was changed to a no-contest.

In the co-feature, Steven “Bang Bang” Butler (27-1-1, 23KOs) has a big scare in getting up off the floor to win a ten round split decision overVitaliiKopylenko (28-2, 16KOs).Kopylenko dropped Butler in round eight with a body shot. The scores were 96-93, 96-93 for Butler, and 95-94 forKopylenko on the third card.

Erik Bazinyan (23-0, 17 KOs) of Quebec, Canada beat Alan Campa (17-5, 11 KOs) of Guaymas, Mexico to defend his NABA and NABO Super Middleweight Titles in a 10-round fight. Bazinyan won via unanimous decision with scores of 99-90, 99-90, and 97-92.

"Campa was tough, moving and defending well," said Erik Bazinyan. "Props to him. I got to do rounds, keeping a good pace, so it was great experience for me."

Alex Salazar (21-3, 8 KOs) of Tlaquepaque, Mexico defeated Abraham Cordero (13-4-2, 7 KOs) of Guadalajara, Mexico via unanimous decision in an eight-round super middleweight fight. Salazar won with scores of 79-73, 80-72 and 80-72.

"I'm happy to fight in Las Vegas," said Alex Salazar. "It fills me with pride to have the opportunity to fight on a Golden Boy card. It gives me inspiration!"

Richard Acevedo (5-0, 5 KOs) of Garden City Kansas defeated Mario Sosa (3-2, 3 KOs) of Tamaulipas, Mexico via TKO of the first round in a middleweight fight originally scheduled for six rounds. Acevedo won with time of 2:05 in the aforementioned round.

"I feel blessed, and I'm thankful to God," said Richard Acevedo. "I'm blessed and thankful to my brothers and my team, Westside Boxing. And of course, thank you to Golden Boy!"