It sounds more and more like Dallas Cowboys quarterback Tony Romo's status for Sunday's game against the Arizona Cardinals won't be determined until almost kickoff, according to Todd Archer of ESPN.

It also sounds like Jones and Romo may not know exactly what it is that is keeping him sidelined at the moment.

Earlier today, while talking to 105.3 The Fan in Dallas, via Archer, Jones said there is nothing "medically" wrong with Romo.

"We have nothing medically that would prevent him from playing," Jones said Wednesday morning. "What I mean by that is there is nothing to his injury that won't function.

"This is a function of pain tolerance, [and] it is a serious issue. You could look at people who had similar-type contusions or a similar-type injury and haven't played the next week, so that would cause you some concern."

"If it's about pain tolerance, I'll play," Romo said today, according to a report from Darin Gantt of ProFootballTalk via Mike Jurecki of Fox Sports 910.

Romo, who needed surgery last December to repair a herniated disk in his back that kept him out for the entire offseason and limited him in training camp and the preseason, arrived early to the team's Valley Ranch practice facility on Wednesday for treatment.

Cowboys coach Jason Garrett has said that this current injury is not related to the one that Romo suffered last year.

"The main thing is the tolerance," Jones said. "We don't know how impactful the soreness or impactful the stiffness would be on him. We don't know that and won't know that until probably as late as game time."

Should Romo be unable to play, Brandon Weeden will make the start in his place. Weeden completed 4-of-6 passes for 69 yards, including a 25-yard touchdown, in the fourth quarter of Monday's game against the Washington Redskins.