Crossword clues for Fastball, in slang:MEANLike a hard-to-hit fastball, in slangHIGHHEATERHard-to-hit fastball, in slangHEATERFastball, in slangCHEESEFastball, in slangHEATFastball, in slangGASFastball, in slangHEATFastball, in sports slangGASFastball, in baseball slangHEATERFastball, in baseball slang