The placed defensive lineman on the Reserve/COVID-19 list Saturday.
Simmons, a former Mississippi State star, has 12 tackles, three quarterback hits and a sack for the 3-0 Titans, who picked the lineman 19th overall in the 2019 draft.
The Titans have suffered a COVID-19 outbreak within their organization, with eight players and eight staff members testing positive, per Adam Schefter of ESPN. The identities of those players and staff have not been disclosed.
In response to the outbreak, the NFL postponed the Titans' home game against the Pittsburgh Steelers, which was scheduled for Sunday, to Oct.