The Dallas Cowboys’ starting left guard Tyler Smith is scheduled to have thumb surgery and is expected to miss roughly four to six weeks, affecting early-season availability.

Multiple outlets report the injury involves his left thumb and that the team plans to place him on injured reserve, which would require him to miss at least four games. Yahoo Sports also notes the surgery is scheduled for Tuesday, with coach Brian Schottenheimer describing a timeline that could extend toward six weeks. Fox Sports and CBS Sports similarly project a four-to-six-week absence.

The Athletic adds further context for the team’s Week 1 plan, saying T.J. Bass will step in at left guard for the season opener against the New York Giants. While the exact wording varies across outlets, the shared focus is that Smith is a three-time Pro Bowler/All-Pro expected to be sidelined for the first stretch of the regular season, with a replacement preparing to fill his role immediately.