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% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for Baseball's Hammerin' ___ 4 letters:

HANK: Baseball's Hammerin' ___
HANKAARON: Hammerin' baseballer
AARON: Baseball's "Hammerin' Hank"
GREENBERG: Baseball's 'Hammerin' Hank'
AARON: Hammerin' Hank of baseball