Robert Guerrero rallied after being knocked down in Round 4, and won a 10-round split decision over Aron Martinez.
Andrzej Fonfara and Nathan Cleverly dueled relentlessly in an instant-classic slugfest.
Moises Flores was the more accurate and aggressive fighter throughout the fight, earning a TKO in the twelfth round.
Rising 130-pound prospect Omar Douglas remained undefeated, winning a wide unanimous decision over Braulio Santos.
Dirrell boxed circles around Rubio, resulting in a victory by unanimous decision with Dirrell winning 100-90 on all three judges’ scorecards.
Shawn Porter won a physical fight that went the distance, earning a 12-round unanimous decision over Adrien Broner, while Errol Spence Jr. notched up a decisive win over Phil Lo Greco.
Adrien Broner completely dominated John Molina Jr. over 12 rounds, winning a unanimous decision and only losing two rounds total on all three judges' combined scorecards.
Mexican veteran Aron Martinez seized control midway through the 10-round bout and upset former two-division champion Devon Alexander in a unanimous decision.
Chris Areola used a huge right hand to floor Curtis Harper in the first round, withstood a furious rally by his opponent, and pushed the pace over the last two rounds for a UD.
Washington controlled the early rounds but Mansour battled back late, resulting in a split draw on the judges' scorecards.