WBC Featherweight World Champion Gary Russell Jr. will defend his title against former world champion Kiko Martinez in the co-feature to Wilder vs. Breazeale on Saturday, May 18 live on SHOWTIME from Barclays Center, the home of BROOKLYN BOXING™, and presented by Premier Boxing Champions. SHOWTIME CHAMPIONSHIP BOXING® begins at 9 p.m. ET/6 p.m. PT […]