Assertion: spin | /r/ObjectUse | used as something of a scouting tool
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text: Spin can be used as something of a scouting tool for fastballs, in that you don't need a large sample of pitches to know if a pitcher has it or not, and in that pitchers with low spin may be best served not trying to get strikeouts high in the zone -- while high-spin pitchers might do the opposite.