Mark down Dec. 4, 2017, as a seminal day in New York Giants history.

In a sweeping strike, Giants ownership fired general manager Jerry Reese and head coach Ben McAdoo, a Monday massacre that will forever change the history of a franchise that has lost its way.

In a swift and stunning fall from grace, McAdoo’s brief and turbulent stay as head coach of the Giants came to an end, as he was fired after only two seasons in the wake of a groundswell of losing and his mishandling of the Eli Manning demotion that prompted a near-revolt by the fans.

McAdoo reported to the team facility in the morning and was quickly informed he was gone.

The Giants have not fired a general manager since 1978, but they parted ways with Reese, who had been with the organization since 1994 and been the head of all football operations since 2007. Reese won two Super Bowls in his 11 seasons, but the Giants are 2-10 and in disarray.

McAdoo’s tenure lasted 28 games, making this the shortest stay for a Giants head coach in 89 years. This is a franchise that preaches patience, but ownership ran out of that following a week of unprecedented unrest. One year after he was a Coach of the Year candidate after going 11-5 in his debut season and leading the Giants to their first playoff appearance in five years, McAdoo exits with a record of 13-15, plus an 0-1 record in the postseason.

The last time the Giants fired a coach during the season was 1976, when they parted ways with Bill Arnsparger after an 0-7 start. Arnsparger was in his third season as head coach. McAdoo did not get out of his second year.

Defensive coordinator Steve Spagnuolo will take over as interim coach, while assistant general manager Kevin Abrams will take over the front office for now.