As headliner of Mad Dog Sports Radio, at Ch. 82 on SiriusXM Radio, and host of the afternoon radio show on that channel called Mad Dog Unleashed, as the television host of High Heat on MLB Network, and with his new gig on First Take as partner to Steven A. Smith on ESPN television, “Mad Dog” is one of the biggest names in sports talk today. …And yet the moniker doesn’t do justice to his radio skills, and totally fails to describe Chris Russo.