Adam Schefter is reporting that standout DT Jeffery Simmons suffered a torn ACL while training for the 2019 NFL Draft:
From @mortreport and me: Mississippi St. DT Jeffery Simmons, projected to be a top 15-pick in April, suffered a knee injury during training that is thought to be a torn ACL, per league sources. A statement to offer clarity on Simmons' injury is expected to be released today.— Adam Schefter (@AdamSchefter) February 12, 2019
Simmons is a guy that has been a pretty popular pick for he Titans in mock drafts because of his ability to disrupt from the interior of the defensive line.
This will obviously hurt Simmons in the draft process, but it just means that someone is going to get a steal on a pick later in the draft. There is a good chance that he will be ready for the start of the season with the way guys are coming back from ACL injuries these days. I would be surprised to see him fall much further than the second round in the draft. The longer he stays there, the more someone will be tempted to move up and take him like Jon Robinson was with Harold Landry last season.
The folks over at The Draft Network have an excellent break down of Simmons here.