Cooper (hamstring) was a full participant in Wednesday's practice, Clarence E. Hill Jr. of the Fort Worth Star-Telegram reports.
Cooper has spent the last few weeks dealing with a hamstring injury, but he's now managed to resume handling unrestricted reps. Barring any setbacks, Cooper is fully on track to suit up against the Rams on Sunday Night Football. He'll lead a dangerous Dallas receiving group also consisting of Michael Gallup, CeeDee Lamb and tight end Blake Jarwin against Los Angeles' formidable secondary.