Sirius XM Radio announced today that best-selling author and columnist John Feinstein has joined Mad Dog Radio, the all-sports talk channel available to listeners nationwide on SiriusXM channel 86. Starting Thursday, March 8, Feinstein will join Bruce Murray to host the newly named Beyond the Brink every weekday from 10:00 am to 2:00 pm ET. Feinstein and Murray will debut their show at the ACC Basketball Tournament, broadcasting live from Atlanta’s Philips Arena on Thursday and Friday. Throughout the year, Feinstein and Murray will cover the spectrum of sports on their show, interviewing high profile guests, debating topics and talking with callers nationwide about the headline stories of the day.