Jaguars defensive tackle Roy Miller will be placed on IR after having Achilles surgery this week, a source tells Ian Rapoport of NFL.com (on Twitter). Needless to say, Miller is done for the rest of the 2016 campaign with no hope of a late-season return. 
A starter for most of his career, Miller has missed only two regular season games since joining the Jags in 2013. In his six starts this year, Miller had ten tackles. Pro Football Focus ranked him only 67th out of 120 qualified interior defenders, but he was viewed as a key veteran for Jacksonville.
“Roy Miller is one of the most important parts to our defense, hands down,” said linebacker Paul Posluszny (via the Florida Times-Union). “If he’s out for significant time, that’s a very significant loss for us. He’s our best interior guy and he’s a team leader.”
When Miller exited the game on Sunday, the team turned to Abry Jones to fill his shoes. They may also look to add a defensive lineman, though they could also get by with Malik Jackson, Sen’Derrick Marks, Jones, and Sheldon Day. Tyson Alualu, who is listed as a defensive end, also could play on the interior.