If you believe Gronk's brother, Rob Gronkowski isn't sure about his career with the Patriots when the Super Bowl is over.

TMZ Sports got a hold of Chris Gronkowski — who used to be a pro football player himself — and he was the one who spilled the beans about his older brother's uncertain future.

“I couldn't tell you, and I don't even think at this point that he knows what he's going to do after the season.”

The Gronk's future is uncertain, not because he's not a good player, but because he's suffered a lot of serious injuries over the course of his nearly decade-long career.

But no less of a guy than WWE superstar Mojo Rawley has said that Rob Gronkowski is “one of the toughest guys I know,” and he quickly bounced back even from a devastating concussion.

The Gronk has become an even bigger superstar than his quarterback, Tom Brady — he's hosted his own comedy special featuring some rather funny comedians, and even appeared ringside at Wrestlemania earlier in the year!

He's also a well-beloved sports figure thanks to his down-to-Earth demeanor.

But per Chris Gronkowski, his brother wants to be best known for his on-the-field work.

“If you actually watched him play throughout the year, he was crushing people all year!”

Rob Gronkowski and the rest of the New England Patriots will play against the Los Angeles Rams at the Super Bowl on Sunday, February 3rd in Atlanta. It should be interesting to see who wins the ring this year.