Do all sub-10 sprinters have a 40 inch+ jump vertical ?

interesting question given great sprinters need immense leg power.

I suspect many would, but some may not because they may lack the skill.

The only thing I am absolutely certain of is that they can all run under 10 seconds. How high can they jump? Who knows?

Long time ago I read something about all the sprinters being able to dunk easily. Here in Texas we had a guy 5'2" high schooler who could dunk with 2 hands. If you are sprinting all the time and working on your legs - you will have the hops.

I ran a couple of 11.0s and was a 51.x 440 guy (not fast. I know) . I figured out from where I could put my fingers on a BB rim that I had a 29 inch vertical jump. Anyone who can run sub-10 is definitely going to be in the high 30s at least for vertical jump.

yes, when I ran 11.2 I achieved a 76cm standing vertical.

Definitely. I ran a 13.5 100m and have a 19 inch vertical. That sprinting ability gives you hops! <insert clown face>