After starting his Major League career with a bang, shattering the single-season home run record for a rookie with 49, Mark McGwire suited up for his first World Series appearance in just his second season in the Majors. Rawlings Adirondack 256 B was intended for use by Big Mac in the 1988 World Series, but never made it to the plate. Nevertheless, a key early bat to own from this Hall of Fame lock. "256 B MM" stamped on knob. Mint condition and ready for display.