Clelin Ferrell's placement on the reserve/COVID-19 list now has an explanation.
The defensive end tested positive for COVID-19, NFL Network Insider Ian Rapoport and NFL Network's Tom Pelissero reported. The positive test means Ferrell is likely out for Sunday night's prime-time affair (and NFL Total Access Game of the Week) with the Kansas City Chiefs, per Rapoport and Pelissero.
Safety Lamarcus Joyner was identified as a close contact, which explains his placement on the reserve/COVID-19 list, but still stands a chance to play if he tests negative.
Former LSU edge rusher Arden Key is listed as Ferrell's backup on Las Vegas' depth chart.