But owner Jerry Jones said Romo's status is unchanged.
Perhaps for the first time in Romo's career, that doesn't equate to a grim outlook for the Cowboys.
Behind rookie quarterback Dak Prescott, the Cowboys rallied for a fourth-quarter win at Washington and improved to 1-1. Prescott has thrown 75 passes without an interception in two games.
The outlook for Romo remains week-to-week.
"We don't want to eliminate him from eight weeks of our schedule. He's making progress. We take his situation day by day and week by week, and we're optimistic he can return," head coach Jason Garrett said before the Week 1 loss to the New York Giants.
Romo has played in previous years with a transverse process injury (cracked bones in his back), and Garrett knows not to count him out unless medical professionals tether the veteran to the bench. Romo currently is sidelined due to a compression fracture in his back, which doctors have said limits mobility and can cause rigidity in side-to-side torque action such as throwing the football.
Garrett has stepped back from his comments Aug. 25 when Romo was hurt at Seattle that the injury "is not a serious thing." But with Romo doing light rehab work the past two weeks, signs of progress are being noted at team headquarters in Frisco, Texas.
Sunday's win in Washington is a sign of progress to Jones.
Prescott, a fourth-round pick in April, was 22 of 30 for 292 yards and four sacks against the Redskins.
Dallas now has two wins without Romo since 2013, both at FedEx Field.