WASHINGTON, Dec. 31 (UPI) -- Each year, the day after the regular season ends in the National Football League is called Black Monday.

It's called that because it's the day coaches whose jobs are known to be in jeopardy get pink slips.

The annual firings started early this season when Dan Reeves resigned from the Atlanta Falcons after he was told by management in November that he would be replaced at season's end. Jim Fassel got a similar message from the New York Giants two weeks ago, but he stuck it out through Sunday.

On Monday, the firings were numerous and likely are not over. Gone are Greg Williams at Buffalo, Dick Jauron at Chicago, and Dave McGinnis at Arizona, and based upon what many analysts think, it's a foregone conclusion that Bill Callahan is out at Oakland.

After missing the playoffs a second year in a row, Dave Wannstedt, whose Miami Dolphins were 10-6, got a reprieve from the team, but to keep his job as coach he had to agree to relinquish his duties as general manager.