The Cowboys placed Cooper on the reserve/COVID-19 list Friday, ruling him out for Sunday's game against the Chiefs, Ian Rapoport of NFL Network reports.
Cooper may also miss a second game, with the Cowboys hosting the Raiders four days later on Thanksgiving Day. Assuming no other players test positive or are deemed close contacts, Dallas is left with CeeDee Lamb, Michael Gallup, Cedrick Wilson, Noah Brown and Malik Turner as the options at wide receiver Sunday in Kansas City.