What happened: The procedure for Tyler Smith is set for Tuesday, five days before Dallas' regular-season opener. Brian Schottenheimer provided the timetable, according to Adam Schefter.
Why it matters: Smith's absence forces an immediate change on the interior offensive line. A Week 14 bye offers no early break in the recovery period.
By the numbers: Four weeks from Tuesday is Oct. 6; six weeks is Oct. 20. Dallas plays four games by Oct. 4 and six by Oct. 18.
What to watch: Watch for the Cowboys' roster designation and replacement plan at left guard before the opener.