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.