On the night of his 22th birthday, and in the biggest game of his life, Cooper leaves certainly arrived at the age of majority on the night.
The rookie from the Eagles produced a play worthy of the tradition of the Super Bowl when he chose an exhausted Patrick Mahomes in the second quarter and returned it 38 yards for a touchdown.
After Mahomes tried a risky body launch through, although the three -time Super Bowl winner is no stranger to the acts of high wire, they left the pass destined for Deandre Hopkins before making his way to the final area.
The score gave Philadelphia an advantage of three possessions at that time, an advantage that did not feel out of place given how Mohamses and Co. had been frustrated until that moment.
Mahomes had been fired in two consecutive plays before his highly little characteristic error, and launched another interception just before part time, this time to Zack Baun, to establish another Eagles score for AJ Brown and a great advantage of a philadelphia of 24- 0 for Philly.
Cooper left a legendary pick-seis of Patrick Mahomes in the first half
Mohomes threw two interceptions in a little characteristic first half that included only 33 aerial yards
He left 38 yards run and make his way in the final area
They leave and the rest of the Eagles defense kept Kansas City only a first attempt and 23 yards of total offensive in a first half where Muhamas seemed completely out of place.
The rookie, a second round of Iowa, was not the only Eagles player who celebrated a birthday on Sunday night.
The Saquon Barkley corridor also turned 28, on the last day of a season that saw him reach historical heights by land.
More to follow