Zhang Zhilei scored the third straight first-round knockout of the night as he stopped John Orr.
Zhang landed brutal left hands to drop Orr twice before the bout was halted at 2:27. Zhang remains undefeated at 9-0, six KO's. Orr is 1-8.
Next up: Abner "Pin" Cotto, the second cousin of Miguel and Jose, (19-3, nine KO's) will be in a six-round junior welterweight bout against the busy Samuel "Bruno" Amoako of Silver Spring, MD by way of Ghana (21-10, 15 KO's). Amoako makes his second straight trip to the DC Armory in two weeks after dropping a 10-round unanimous decision to Sharif Bogere on April 30.