LAS VEGAS, NV - MAY 01: (L-R) Golden Boy Promotions CEO Richard Schaefer, Clark County Commissioner Steve Sisolak, MGM Resorts International Chairman and CEO Jim Murren, WBC welterweight champion ... more 
LAS VEGAS, NV - MAY 01: (L-R) Golden Boy Promotions CEO Richard Schaefer, Clark County Commissioner Steve Sisolak, MGM Resorts International Chairman and CEO Jim Murren, WBC welterweight champion Floyd Mayweather Jr., President and CEO of AEG Dan Beckerman, sportscaster Bill Walton, President of business operations for the Los Angeles Kings Luc Robitaille and UFC President Dana White shovel dirt during a groundbreaking for a USD 375 million, 20,000-seat sports and entertainment arena being built by MGM Resorts International and AEG on May 1, 2014 in Las Vegas, Nevada. The arena is scheduled to open in early 2016. (Photo by Isaac Brekken/Getty Images for MGM Resorts) less 
1 / 29
Getty Images | Photo By Isaac Brekken / Getty Images for MGM Resorts
Thu, May 1, 2014 5:11 PM EDT