Rances Barthelemy (22-0, 13 KOs) and Antonio DeMarco (31-4-1, 23 KOs) headlines the next installment of Premier Boxing Champions on CBS taking place Sunday, June 21 live from the MGM Grand Garden Arena in Las Vegas with televised action beginning at 4 p.m. ET/1 p.m. PT. Tickets for the live event, which is promoted by Mayweather Promotions and TGB Promotions are priced at $100, $75, $50, and $25 not including applicable service charges and taxes go on sale Thursday, May 28. To charge by phone with a major credit card, call Ticketmaster at (800) 745-3000. Tickets are also available at www.mgmgrand.com or www.ticketmaster.com.