An MRI exam on right tackle Eben Britton's shoulder Monday revealed a torn labrum, and the second-year pro will have season-ending shoulder surgery.
Britton dislocated his shoulder during the second quarter, popped it back in place himself and returned to the game. He dislocated it again on the next series. This time, he couldn't get it back in place without help from team doctors.
Britton said he believes "the damage was done at that point."
Jordan Black, a seventh-year veteran, will replace Britton in the lineup beginning Sunday at Dallas.
Britton has started 22 games for the Jaguars over the past two seasons. His absence is a tangible loss for an offensive line that already lacks depth.
The Associated Press contributed to this report.