Trevon Diggs Dallas Cowboys Autographed Navy Blue Rookie Football Jersey Signed Pro-Style Football Jersey from Dallas Cowboys star Trevon Diggs - authenticated by James Spence Authentication (JSA) This pro-style football jersey has been hand-signed by Dallas Cowboys star Trevon Diggs. Hand-Signed by Dallas Cowboys star Trevon Diggs Signature is bold and clear on the jersey Authenticated with JSA serially numbered hologram of authenticity