Back to the "double letter" former Twins. "TT" was the last one posted. To my knowledge, there have been no Twins with "UU", "VV", "WW", "XX", "YY" or "ZZ". Thus that sub-topic is done. So, I'll add a non Twins player with double initials - Walt Weiss - the 1988 A.L. Rookie of the Year.