Cooper Rush will make his fourth straight start for the Cowboys. The team also signed Will Grier to the active roster from the practice squad to back up Rush. Grier was out of standard elevations.
The strength in Prescott's thumb is not good enough for him to return this week, per the Morning News report.
Cowboys owner and general manager Jerry Jones said earlier Tuesday that Prescott's thumb is improving but the quarterback still can't grip a football "well enough to play."
Jones made the comments during an interview on Audacy's 105.3 The Fan in Dallas.