European superstar Sergiy Dzinziruk will make his United States. professional debut and the fifth defense of his WBO Junior Middleweight title against once-beaten challenger Daniel Dawson on Friday, May 14, on ShoBox: The New Generation at 11 p.m. ET/PT, delayed on the West Coast, live on Showtime. The 34-year-old Dzinziruk is arguably the world’s top…