MASHANTUCKET, Conn. -- The official weigh-in was held today for tomorrow night's HBO Triple-Header, presented by DiBella Entertainment and K2 Promotions, in MGM Grand Theater at Foxwoods Resort Casino. Saturday's HBO Boxing After Dark tripleheader airs live from the Foxwoods Resort Casino's MGM Grand Theater in Mashantucket, Connecticut at 9:45 p.m. ET/PT. The main event pits IBO/WBA middleweight title-holder Gennady Golovkin in his return to HBO against challenger Matthew Macklin in a 12-round title bout.