High Quality Content by WIKIPEDIA articles! Christopher Michael Russo (born October 18, 1959), known as the "Mad Dog," is an American sports radio personality who is best known as the former co-host of the widely popular Mike and the Mad Dog sports radio show with Mike Francesa, which was broadcast on WFAN in New York City and simulcast on the YES Network. Russo has joined Sirius XM Radio and is in charge of his own channel, Mad Dog Radio. He now hosts an afternoon radio show, Mad Dog Unleashed.