Rob Gronkowski
‘Gronk’ is another player who underwent one of the most dramatic career revivals ever. The Patriots icon was one of the best tight ends of his generation. He formed a brilliant relationship with Tom Brady and was one of Bill Belichick’s favorite players. But he finally retired at 29 because of the toll football took on his body.

Nonetheless, this wasn’t the last that fans saw of him. Gronkowski couldn’t resist the temptation to rejoin Brady in Florida. He joined his old comrade and helped the franchise to a glorious Super Bowl victory. This sealed the fourth ring of his storied career and an amazing return (via Fox News).