What does OB mean in Baseball?

This page is about the meanings of the acronym/abbreviation/shorthand OB in the Sports field in general and in the Baseball terminology in particular.

Organized Baseball

An old term not used much anymore but includes all pro baseball.

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What does OB mean?

Ob, Ob River(noun)
a major river of western Siberia; flows generally northward and westward to the Gulf of Ob and the Kara Sea

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"OB." Abbreviations.com. STANDS4 LLC, 2017. Web. 21 Aug. 2017. <http://www.abbreviations.com/term/548301>.