Barthelemy shut out DeMarco and Vasquez outslugged Wale Omotoso to win a unanimous decision and remain undefeated.
Andre Berto sent local fighter Josesito Lopez home with a knockout, Shawn Porter won a knockout over Erick Bone, and Chris Areola defeated Curtis Harper by unanimous decision.
Omar Figueroa Jr. remained undefeated with a unanimous decision win over Ricky Burns, and Jamie McDonnell retained his 118-pound world title with a unanimous decision over Tomoki Kameda.
Keith Thurman put on a winning performance against Robert Guerrero, and Adrien Broner saw off John Molina Jr.
In a battle of former world champions, Argenis Mendez effectively used his jab to outbox Miguel "Titere” Vazquez and earn a 10-round unanimous decision in a 135-pound bout.
After a dramatic back-and-forth fight full of power punches, Lee vs Quillin was ultimately declared a split decision draw.
After the fight was stopped at the end of the sixth round, with Lara unable to continue because of impaired vision, it went to the scorecards, with all three judges scoring the fight 57-57 for a technical draw.
Kohei Kono defended his 115-pound world title with a unanimous decision over Koki Kameda, who fell short in his attempt to become the first Japanese boxer to win titles in four weight classes.
Tomoki Kameda came up short in his rematch against British 118-pound world champion Jamie McDonnell, who scored a 12th-round knockdown and won a unanimous decision.