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					Originally Posted by sycks22  Although a lack of precision instruments prevented accurate measurement of his fastball, in 1917, a Bridgeport, Connecticut munitions laboratory recorded Johnson's fastball at 134 feet per second, which is equal to 91.36 miles per hour (147.03 km/h), | 
	
 Thanks for that info, but I would not put much credence in those munition tests. In the before-mentioned documentary Fastball, they mention one of these tests that only measured Johnson's fastball at 122 feet per second or 83 miles per hour.