The Cardinals have likely lost a key offensive piece for Sunday's game in San Francisco after the team put wide receiver A.J. Green on the Reserve/COVID-19 list on Wednesday.

Green was not at practice, although after practice coach Kliff Kingsbury did absolve Green of blame on the game's final interception when Green did not turn around for the ball.

Tight end Demetrius Harris was also put on the Covid list, according to the NFL's official transactions report.

Green and Harris are the first players to go on the list since defensive tackle Corey Peters tested positive the morning of the Browns game on Oct. 17. It is the 24th and 25th time players have landed on the Covid list since training camp began (including one practice-squad player.)

Since Kingsbury reported the entire team was vaccinated at one point -- when Green was on the roster -- Green's vaccination status means he in theory can return if he is asymptomatic and has two negative tests 24 hours apart.

If he does not make it back for Sunday, the Cardinals' offense has the chance to be severely short-handed. Quarterback Kyler Murray's status is in doubt because of an ankle injury, while fellow starting wide receiver DeAndre Hopkins missed another practice Wednesday because of a bad hamstring. Hopkins played only 15 snaps against the Packers because of the injury.

Harris has been the third tight end behind Zach Ertz and Darrell Daniels.

Green was not the biggest name to go on the Covid list Wednesday. Packers quarterback Aaron Rodgers, who is unvaccinated, was placed on the list as well. Also going on the list was Giants running back Saquon Barkley.