LOS ANGELES, CA - APRIL 12:  Roc Nation's president Michael Yormark speaks during the press conference at the Roosevelt Ballroom on April 12, 2017 in Los Angeles, California.  Sergey Kovalev will challenge Andre Ward for the Unified Light Heavyweight World Championship Saturday, June 17, 2017 at the Mandalay Bay Resort in Las Vegas.  (Photo by Josh Lefkowitz/Getty Images)