Come to think of it, I can’t think of a single sub-10 guy now that does DL.
They used to have a couple of good sprinters at Arkansas. One guy, J-Mee Samuels wrote on Trackshark that he was doing something like 360 bench and 450 squats in high school. The other guy, Tyson Gay, as a professional was doing 225 ATG squats, according to PJ.
You have to be strong enough, but only strong enough. I know which of those two guys I’d rather be.