The Oakland A's had 3 consecutive American League Rookie of the Year winners. Jose Canseco was voted American League Rookie of the Year in 1986, Mark McGwire was voted American League Rookie of the Year in 1987 and Walt Weiss was voted American League Rookie of the Year in 1988. Jose Canseco, Mark McGwire & Walt Weiss have all three hand signed this Rawlings Official American League Baseball (Bobby Brown). All three included the year they won American League Rookie of the Year - 86/87/88. Full Blue Pen Signatures, minor tone spots, sold as is. Beckett Authentication Signature Review Order ID : 99315, Order Item ID #119886. Image of actual item in stock - as shown