Derek Jeter Memorabilia Exclusively from Steiner Sports. Shop Derek Jeter Autographed Baseballs, Derek Jeter Signed Jerseys, Derek Jeter Autographed Bats & Many More Derek Jeter Signed Collectibles. Derek Jeter is a Steiner Sports Exclusive Athlete and All Derek Jeter Autographed Memorabilia Comes with a Certificate of Authenticity and an Accompanying Tamper-Evident Steiner Hologram._x000D_