Shinsuke Yamanaka and Hozumi Hasegawa each won his WBC world title fight by technical knockout on Friday.
Yamanaka defended his bantamweight crown for the 11th time when he floored top-ranked challenger Anselmo Moreno of Panama in the seventh round of an entertaining battle of lefties who came here to punch.
The 35-year-old Hasegawa defeated Mexican Hugo Ruiz to reclaim the super bantamweight crown he won in November 2010 only to lose the following April in his first title defense. The 29-year-old Ruiz was making his first title defense.