Hideki Matsuyama autographed memorabilia. Add this Hideki Matsuyama Autographed The Memorial Tournament Pin Flag to your signed memorabilia collection. This product has been authenticated by Prime One Sports and comes with a Certificate of Authenticity and matching taper-evident hologram. All Prime One Sports memorabilia is backed by our 100% Money Back Guarantee. Get your authentic Hideki Matsuyama Autographed Pin Flags from Prime One Sports Online. This bold Hideki Matsuyama signature is authentic and can be an excellent addition to your man cave, home or office.