(WNFL) - At least four injured Green Bay Packers are expected to play on Sunday at Dallas. Running back Eddie Lacy, outside linebacker Mike Neal, and inside linebackers Brad Jones and Jamari Lattimore all sat out of Wednesday's and Thursday's practices. Lacy played the second half of last week's win over Atlanta with a sprained ankle. Neal is getting over an abdominal problem. Jones and Lattimore are coming off knee injuries. One player you most likely won't see on Sunday is rookie offensive lineman J-C Tretter. He was recently activated from the physically-unable-to-perform list, after he broke an ankle last spring. With center Evan Dietrich-Smith possibly being out for Dallas, Tretter has been getting some practice time at that spot. However, guard T-J Lang remains the Packers' top backup at center. Offensive line coach James Campen said Tretter is still trying to catch up to the fundamentals, after being sidelined for so long. Campen does say Tretter is making good progress, and it's great to see him on the field.