Cleveland Browns quarterback Baker Mayfield opened some eyes on Thursday when he admitted that he hasn’t thrown a ball this week.

That said, Mayfield expects to be ready for the team’s AFC wild-card game against the host Pittsburgh Steelers on Sunday night.

While Mayfield will be under center on Sunday, Browns starting safety Ronnie Harrison will be unable to play after testing positive for COVID-19.

Dr. Allen Sills, the league’s chief medical officer, admitted Thursday on NFL Network that “there was some spread (from) one individual to another,” in the latest round of the Browns’ positive COVID-19 cases.

Harrison, 23, returned from a four-game absence due to a shoulder injury and recorded six tackles in Cleveland’s 24-22 victory over Pittsburgh on Sunday.

While Harrison is headed to the reserve/COVID-19 list, fellow safety Andrew Sendejo was activated off that list on Thursday. He will be eligible to play on Sunday night.

Sendejo, 33, has collected 67 tackles in 14 games this season. He has 483 tackles and nine interceptions in 124 career games (75 starts) with the Dallas Cowboys (2010), Minnesota Vikings (2011-19), Philadelphia Eagles (2019) and Browns.