A New York Yankees Sports Illustrated "Rock of Ages" Magazine hand signed by Roger Clemens. The signature and item are in excellent condition. Roger Clemens is a former Major League Baseball pitcher, widely regarded as one of the most dominant pitchers in the sport's history. Nicknamed "The Rocket," Clemens won seven Cy Young Awards--the most ever--along with an MVP award in 1986. AUTHENTICATION: The item is accompanied by a JSA Certificate of Authenticity - JSA Serial Numbered and Databased Hologram