For a 73-year-old, Joe Namath sure can play the role of Twitter troll.

The Hall of Fame Jets quarterback tweeted during much of the Jets’ 24-16 win over the Ravens on Sunday and made some noise when taking issue with Geno Smith.

Smith’s first start in nearly two years ended when he tore his right ACL on a sack. After he was ruled out of the game, he remained on the sideline with his teammates.

Namath tweeted: “If you’ve got a right knee injury keeping you out of the game why are you standing on the sideline the entire 2nd half? How bad can it be?”

Of course, Namath couldn’t have known the severity of the injury, as the news of Smith’s torn ACL broke yesterday. Namath has yet to issue any follow-ups.

Smith tweeted: “Somebody tell Joe that the doctors have the final say on whether you can or cannot get back into the game . . . and also that I love him!”

Namath also had a few criticisms of the team. He may not have liked what he saw, but he was happy with the result.

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“Feels good to win! Nice goin Jets!” he tweeted.