The Cardinals were up 21-6 at the start of the fourth quarter yesterday in Arizona, and then this play, which would've been the nail in the coffin, happened:

The Titans would quickly take it to the other end of the field and score six points, making this a 21-12 ballgame.
After a quick three-and-out by Arizona, Tennessee would drive the field again, leading to one of the strangest plays I've ever seen on a football field.

So now it's 19-21, Cardinals still in the lead.
Cardinals pick up one first down and are forced to punt the ball at the two-minute mark. That led to this:
And..
And that, ladies and gentlemen, is how to blow a football game in the worst possible way.
A few bonus bloopers from earlier in the game:

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