The Tennessee Titans closed their training facility once again on Sunday due to another positive coronavirus test.

The Titans' clash with the Buffalo Bills was put back two days to Tuesday by the NFL as a result of COVID-19 cases.

Tennessee were able to return to their training facility on Saturday after no positive tests were found for two days in a row.

However, they have now been forced to close it down just a couple of days before they are due to face the Bills at Nissan Stadium.

A Titans statement said: "This morning we learned that a staff member tested positive. We have temporarily closed our facility and are in communication with the league on the next steps."

The Titans' Week 4 showdown against the Pittsburgh Steelers had to be postponed until later this month.

The New England Patriots' training facility was also shut down again on Sunday amid reports of a new coronavirus case, putting their Week 5 game against the Denver Broncos in doubt. 

Patriots cornerback Stephon Gilmore had reportedly tested positive for COVID-19 on Wednesday, becoming the team's second high-profile case after Cam Newton. 

Quarterback Newton had missed the Week 4 encounter with the Kansas City Chiefs, with that game pushed back a day as a result of isolated cases for both teams.

New England, beaten 26-10 by reigning champions the Chiefs, had been able to return to the practice field on Saturday, having received no further positive results up to that point.