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Anonymous
International Softball Federation:
11-inch softball: 166.5 to 173.6 grams . . . . 1.63 to 1.70 newton
12-inch softball: 178 to 198.4 grams . . . . . 1.75 to 1.95 newton
Major League Baseball:
MLB Baseball: 5 to 5.25 ounces avdp . . . . . 1.39 to 1.46 newton
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