Miami Dolphins left tackle Jake Long reportedly has a torn biceps, a source told ESPN on Sunday.
Long left Saturday's 27-24 loss to the New England Patriots with an arm injury and didn't return.
Second-year player John Jerry stepped in for Long on Saturday.
Long sat out against Buffalo in Week 15 with a rib injury. The fourth-year player didn't seem to have any visible issues with the injury Saturday, according to the South Florida Sun-Sentinel, which reported that he did not have a brace on and did not seem to be favoring the arm after the game.