Both fighters were cautious late, as the fight slowed in the final two rounds.
Pacquiao, whose pro career stretches back 24 years, showed he still has the speed that carried him over his spectacular career. He also displayed some power, though he was never able to drop Broner.
Pacquiao was clearly the favorite of the crowd of 13,025, who gathered at the MGM Grand arena to see if the part-time fighter still had some fight in him. Turned out Pacquiao did, and then some as he pushed the attack against Broner.
Pacquiao was the aggressor from the opening bell, and he had to be because Broner threw only occasional punches in the opening rounds. Pacquiao attacked at will, winning round after round before the fight started to heat up in the middle rounds.
Broner, meanwhile, fought like he was merely trying to survive, despite being 11 years younger than his opponent. He was booed loudly as he raised his hands in victory and jumped on the corner ropes as if he had won.
“I beat him, everybody out there knows I beat him,” Broner said. “I clearly won the last seven rounds.”
Mayweather watched it all intently from his ringside seat, and was coy about possibly coming out of retirement for a reprise of the 2015 lackluster fight Mayweather won by decision over Pacquiao.