Kevin Youkilis Steiner and MLB Authenticated Autographed 8x10 Photo-Yankee Star Kevin Youkilis has personally hand-signed this 8x10 Photo. Youkilis is known for his scrappiness grittiness dirt-stained jerseys home-plate collisions and his strange batting stance. During his time in Boston Youk was a 3x All-Star and led the Sox to two World Series Titles. This Kevin Youkilis autograph is Guaranteed Authentic and includes a Steiner Sports Certificate of Authenticity and accompanying tamper-evident Steiner Hologram. The Steiner Seal Means Its Real. It also includes a Hologram from MLB Authentication. Steiner Sports is the Official Memorabilia Partner of the New York Yankees.