NFL baller Odell Beckham Jr. was the center of attention at a star-studded strip club event one day before he was spotted with Kim Kardashian in Sin City, RadarOnline.com has learned. Three sources said they saw the Baltimore Ravens wide receiver make an appearance at the Spearmint Rhino in Las Vegas on Friday night during Super Bowl weekend. “Metro Boomin was DJing,” said one tipster, who told The U.S. Sun that Beckham Jr. “was with a crew in there partying secretly.” “Meek Mill and a bunch of celebrities showed up,” they dished. A separate partygoer who was at the venue confirmed they saw th…