They say every journey begins with one step. It is true also in sports. Every great player was once a rookie. This article is dedicated to the rookie year of Mark McGwire who is a former professional baseball first baseman. His career spanned from 1986 to 2001. Big Mac, as he was fondly called back in his game days, played for the Oakland Athletics and St Louis Cardinals.

Mark McGwire Rookie Sports Cards are hot. All kinds of Mark McGwire rookie cards used to be valued as collectibles. Nowadays, the most valuable Mark McGwire rookie cards have landed in the hands of collectors. In this article, we have put together a list of 19 Most valuable Mark McGwire Rookie cards.

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