Although Thurman Munson already was a Yankee, this photo of him as a San Juan Senator in the 1969-70 Puerto Rican League shows the future captain was not about to idle in winter. Munson, holding his catcher's mitt while putting away his batting helmet, parlayed his off-season preparation into a .302 batting average in his second year with the Yankees. He and San Juan teammate Roberto Clemente were linked later in tragedy -- both dying in plane crashes. Obtained from a charming lady friend of Thurman who snapped this.