Mack signed with the Commanders on Sunday.
The Seahawks signed Mack off waivers from Baltimore on Tuesday, Bob Condotta of The Seattle Times reports.
Mack signed with the Broncos on Thursday, Ryan O'Halloran of The Denver Post reports.
Mack was restored to New England's practice squad Monday, Aaron Wilson of the Houston Chronicle reports.
The Patriots placed Mack on the practice squad COVID-19 list Friday, Mike Reiss of ESPN.com reports.
Mack (roster exemption) was added to New England's active roster Tuesday, Zack Cox of NESN.com reports.
Mack will not be able to work with the Patriots in Week 9, Mike Reiss of ESPN.com reports.
Mack was claimed off waivers by the Patriots on Tuesday, Aaron Wilson of the Houston Chronicle reports.
Mack was waived by the Titans on Monday, Terry McCormick of TitanInsider.com reports.