This Autographed Rawlings Official National League Baseball A. Bartlett Giamatti Baseball has been Personally Signed by Will Clark; Matt Williams; Jose Uribe; Norm Sherry; Jeff Leonard; Chili Davis; Bill Fahey; Bob Lillis; Chris Speier; Dave Dravecky; Joel Youngblood; Randy Kutcher; Scott Garrelts; Mike Aldrete; Mike LaCoss; Robby Thompson; Mike Krukow; Kelly Downs; Bob Brenley; Rick Reuschel; and two others of the San Francisco Giants. This item is 100% Authentic to include a Certificate of Authenticity (COA) / hologram by Beckett Authentication Services. The authenticity can be verified on Beckett Authentication Services website. Roger Craig is a clubhouse signature.