Correction for the speed of a Knuckleball (baseball)
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How fast is 30 yards per minute?
It's about one-sixty-fifth as fast as a Knuckleball (baseball)
The speed of a Knuckleball (baseball) is about 2,000 yards per minute.
(a.k.a. knuckler, a.k.a. floater, a.k.a. dancer, a.k.a. butterfly ball) (major league average)
The average speed of major league knuckleball pitch is 2,000 yards per minute. Eddie Cicotte, who was later implicated in the 1919 Black Sox scandal, is credited with developing the pitch ca. 1906.