View Post ABC | Revolving Door David Muir Named Co-Anchor of ’20/20′ By Chris Ariens on Jan. 29, 2013 - 12:16 PM Hugh Downs, John Miller, John Stossell, Chris Cuomo and now add David Muir’s name to the list of anchors of ABC’s “20/20.” With Cuomo’s departure to CNN, ABC wasted no time in pairing Muir, who anchor ...