Rob Gronkowksi, the card collector? The New England Patriots legend said he has been in the "collecting game" since he was a kid and is diving back in as the hobby has surged in popularity once again.

Tight end Rob Gronkowski, who won three Super Bowl titles in New England, finished his career ranked as the team's all-time leader in receiving touchdowns. Maddie Meyer / Getty Images After an ...

Rob Gronkowski earned $70,629,507 in NFL salary across 11 seasons with the Patriots and Buccaneers, and by his own account, he never spent a dime of it. The confetti from four Super Bowls never ...