SI Now: Floyd Mayweather v. 50 CentOn Monday's SI Now, Sports Illustrated senior writer Chris Mannix discusses the beef between 50 Cent and Floyd Mayweather and how it will help promoteSI Staff|Share on FacebookShare on XAdd us on On Monday's SI Now, Sports Illustrated senior writer Chris Mannix discusses the beef between 50 Cent and Floyd Mayweather and how it will help promote Mayweather's match against Maidana.Published Aug 25, 2014SI STAFFShare on FacebookShare on XHome/Boxing