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Drawn at the same 8.5 in: Soccer ball. Same drawing, different listings: a bowling ball’s and a soccer ball’s figures are each the lower end of its range.
A bowling ball is 8.5 in (21.6 cm) to 8.595 in (21.8 cm) from side to side, a tenpin ball within the United States Bowling Congress limits. Diameter a tenpin ball must keep under the United States Bowling Congress rules.