Heath was diagnosed with a concussion and will miss Saturday's preseason opener against the Rams, Brandon George of The Dallas Morning News reports.

EDGE Analysis

Heath was originally being evaluated for a shoulder injury, but it turned out to actually be a concussion. The fourth-year player out of Saginaw Valley is currently listed as the second-string free safety on the Cowboy's roster, but with him out Saturday, expect Isaiah Frey to see more playing time.