Friends and family will be in attendance, as well as some of his former Yankee teammates. Specifically, the rest of the members of the "Core 4," which includes Derek Jeter, Jorge Posada and Andy Pettitte, will be there to support Rivera.
They weren't officially part of the "Core 4," but Bernie Williams and Tino Martinez, who were instrumental during their dynasty in the late-1990's into the early-2000's, will also be there for Mo's big moment where he enter's baseball royalty.
Even though Rivera headlines this Hall of Fame class, I'm sure they'll be there supporting another former teammate, Mike Mussina, who unfortunately was not part of a World Series championship team, as he came aboard in 2001.
You can bet Cooperstown, New York will be flooded with a huge Yankee contingent, as Rivera and those teams are a major part of franchise history.