Walker currently covers sports during radio broadcasts in the Washington Metro Area. He hosts his own show on ESPN 980. He hosts a weekly television show called "Doc Walker's ProView," which airs Sunday mornings on ESPN 980 and Tuesday evenings at 11pm on MASN. In 2011, he moved into the color analyst’s seat for radio broadcasts of Redskins games on ESPN 980 after previously serving as the sideline reporter. As of 2019, he is currently once again the sideline reporter for Redskins radio broadcasts.