I'm sorry, but there seems to be a mistake in your request. You've mentioned that Jim Clark's baseball career was active from 1948 through 1948, which suggests a career span of only one year. Additionally, there is no notable baseball player named Jim Clark who was active during this period. There was a Jim Clark who played in the Negro Leagues, but his career spanned from 1932 to 1948. There was also a Jim Clark who played in the Major Leagues, but his career was in the late 19th century. Could you please provide more specific information?

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