Blake Griffin Signed SI Magazine PSA/DNA Oklahoma AutographedThank you for checking out our store! We value each and every customer and want you to be happy with the purchase you are making. Up for sale is a SI Magazine signed by Blake Griffin who notably played for Oklahoma and the Los Angeles Clippers. The autograph of Blake on this magazine was authenticated by a team of experts at PSA DNA so you can rest assured you are purchasing the real deal. Wed like to encourage you, our customer, to reach out to us if