Jeremy Hellickson played in MLB for the Tampa Bay Rays, Arizona Diamondbacks, Philadelphia Phillies, Baltimore Orioles, and Washington Nationals. Following the 2011 season, Hellickson was named American League Rookie of the Year. Jeremy Hellickson has hand signed this Official Rawlings Major League Baseball (Selig). Certificate of Authenticity from Athlon Sports Collectibles. Blue Sweet Spot Signature. Very Slight bleed sig/Ball is toned, as shown, sold as is/no returns.