Rob Gronkowski throws the most intense first pitch in MLB history to the delight of Boston Red Sox fans at Fenway Park

Rob Gronkowski is a national treasure.

Especially when it comes to throwing out a ceremonial first pitch.

It’s become standard practice in modern times for big names to try and throw a strike from a Major League Baseball mound.

Kansas City Chiefs coach Andy Reid recently impressed NFL fans — and Patrick Mahomes — by throwing out a smooth first pitch for a strike on MLB Opening Day.

Of course, Gronk is Gronk.

And when Gronkowski was asked by the Boston Red Sox to throw out a first pitch before Monday’s home game against the Cleveland Guardians at Fenway Park, Gronk did things his way.

Video footage showed the former New England Patriots tight end standing on the mound.

But instead of unwinding and throwing toward home, Gronk suddenly turned into The Hulk version of himself.

The retired football star with 92 career touchdowns was famous in the NFL for spiking his TDs.

So Gronk spiked his first pitch, slamming the ball into the ground and grunting like a caveman.

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Red Sox fans loved it and so did Gronkowski, who celebrated and then leapt into the air for a flying slam.

“GRONK SPIKE! I wouldn’t have it any other way,” a fan tweeted.

“Awesome,” a second fan posted.

“Gronk throwing the first pitch at Fenway? On Patriots Day?? Nature is healing!” a third fan said.

“That was kinda awesome, I won’t lie!” a fourth fan wrote.

Gronkowski, a five-time Pro Bowler, finished his NFL career with 621 catches and 9,286 yards.

He won four Super Bowls, including three with the Patriots.

The Red Sox have started the season 9-8 but they’re tied for third place in the loaded American League East.

After losing high-priced shortstop Trevor Story to a season-ending injury, Gronk might want to stick around at Fenway Park for more games.

Boston was shutout 6-0 by Cleveland, as Gronk’s spiked first pitch was the highlight of the day for Red Sox fans.