NFL commissioner Roger Goodell, NFLPA leader DeMaurice Smith, along with owners and players association officials met Wednesday and Thursday in Chicago to try to bridge some of their significant differences.
The NFL and the players' union negotiated for four hours Monday before calling it a day.
Use a 24-hour extension to get a longer reprieve. That appeared to be the approach for the NFL and the players' union Friday.
The federal mediator overseeing the NFL's labor talks with the players' union says "some progress was made, but very strong differences remain."
The NFL and the players' union wrapped up a sixth consecutive day of mediated talks Wednesday -- and they will meet again Thursday.