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Black Monday is underway in the NFL today as three coaches have already been shown the door.  Atlanta Falcons owner Arthur Blank fired coach Mike Smith this morning. 

Earlier, the New York Jets parted ways with head coach Rex Ryan and GM John Idzik.  The Chicago Bears also fired coach Marc Trestman and GM Phil Emery. 

The "Detroit Free Press" reports the recently-fired San Francisco 49ers head coach will be introduced at a Tuesday press conference and will appear at an afternoon basketball game against Illinois.  The 49ers said after Sunday's season finale that they and Harbaugh have "mutually agreed to part ways" after four seasons.  

The day after the NFL's regular season ends is known as Black Monday because it's when most coaches find out they've been fired.

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