Bolt splits in 9.58

[robin1]

@stylee

I’ve seen mention of micro-accelerations and decelerations within splits. Maybe the slightest change in stride, pushoff, etc., affected a minute change within a mini-split - say 77 meters to 79 or something - and made two .84s (or - the speed required for .84) slightly unequal.

I’m not sure what system they used to take the splits, but differences of 0.01s or even more can be caused by changes in torso and shoulder positions. If they used split beams it’s even possible that they were triggered by hand movements.