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Tony La Russa

Which hat for Griffey, Piazza on Hall of Fame plaque?

Ken Griffey Jr. became a huge star in Seattle, then beelined back home to play in Cincinnati.

Now that he's capped off his career with a trip to Cooperstown, a juicy question: Will Junior wear a Mariners or Reds hat on his Hall of Fame plaque?

Or maybe there's a third option, as reigning NL MVP Bryce Harper tweeted Wednesday.

"Juniors ball cap has to be backwards on his plaque right?" the Washington Nationals slugger posted.

That's how Griffey often flipped his lid, having fun while getting ready for games.

"I haven't really thought about the hat backwards," Griffey later said on a conference call.

As to his preference, he...