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That you speek with seconds.
Which means that while a track runner has a start time of 0.1 or 0.15 seconds, a major league center fielder's start time varies as much as +/- half a second relative to the average...not all CFers are gifted enough to see the pitch, see the swing, and be off before the sound of the crack even reaches them.
So true. And if the CF had a wrong first step it costs him another half or 1 sec.
And that when the ball reach ground in ca 3 to 4 sec.