Former junior lightweight titlist Rances Barthelemy and former lightweight titleholder Antonio DeMarco, both eyeing title shots in the junior welterweight division, will meet on June 21 at the MGM Grand in Las Vegas. The fight, announced on Thursday, will headline a Sunday afternoon Premier Boxing Champions card less than 24 hours after the MGM Grand Garden Arena hosts a PBC on NBC card the previous night with welterweights Shawn Porter and Adrien Broner meeting in the main event of a Saturday night card.