There is a zero percent chance Simmons drops out of the first round. ACL injury or not, dominant DT are huge in the NFL. And with the way ACL surgeries are going now, if he gets surgery done he could still play before the season is over. Lot of folks are getting above 90% within 8-10 months of surgery. Lot of hard work and good response from his body could get him ready by the end of December or into January.