In the third round of their fight, Oleksandr Gvozdyk landed 50 out of 66 power shots on Yuniesky Goinzalez to close the show.
OXON HILL, Md. - Oleksandr Gvozdyk (13-0, 11 KOs) won by a third-round technical knockout over Yuniesky Gonzalez to complete the Ukrainain sweep and unify the NABF and NABO light heavyweight belts
Frustrated that he can't get fights against the opponents he wants, Vasyl Lomachenko took his frustration out on Jason Sosa.
Lomachenko (8-1, 6 KOs) dominated his WBO junior featherweight title defense before Sosa's own corner stopped the fight after the ninth round, completing a three-fight Ukrainian sweep on Saturday night.
After a bout in which even Sosa's corner admitted they were the third choice, Lomachenko says he's eager to unify titles.
Sosa (20-2-4) was a WBA belt holder at 130 pounds, but was forced to vacate to take this fight.
"I'll go home, rest, and then I want to negotiate with all the other champions in my division," Lomachenko said. "If they refuse to fight me, I'm going to move up to 135."
Aleksandr Usyk (12-0) defended his WBO cruiserweight title with a 117-110 unanimous decision over Mike Hunter (12-1) in the first fight of an HBO TV card and the maiden boxing event at the MGM National Harbor.
In front of a heavy Ukrainian contingent in a sell-out crowd of 2,828, Lomachenko battered Sosa, who finished with a badly swollen left eye.
At one point in the sixth round, he mocked Sosa with a matador gesture, to the delight of fans who chanted his name and "Ooo-Cray-Nee-Ahh" throughout while waving blue and gold Ukrainian national flags.
By the ninth, it had become clear to Sosa's corner that this was a no-win proposition.