Cleveland Browns tight end David Njoku landed on the reserve/COVID-19 list on Tuesday.
Njoku, 25, has played in all 12 games (nine starts) and has 27 catches for 407 yards and three touchdowns.
His vaccination status and availability for Sunday's AFC North clash between the host Browns (6-6) and Baltimore Ravens (8-4) are unclear.
A first-round pick by Cleveland in 2017, Njoku has 139 receptions for 1,686 yards and 14 touchdowns in 61 career games (34 starts).
Also Tuesday, the Browns signed tight end Miller Forristall from the practice squad and activated long snapper Charley Hughlett from the COVID list.
Cleveland also signed tight end Ross Travis to the practice squad, restored fullback Johnny Stanton IV from the practice squad/COVID-19 list, and released guard Tristen Hoge from the practice squad.
--Field Level Media