Dallas Cowboys quarterback Tony Romo sustained a bruised back during the third quarter of their 20-17 overtime loss against the Washington Redskins on Monday night.

Romo hurt his back after he was sacked in the third period, but he managed to return to action in their final play of regulation after an initial test revealed no significant damage in his back.

"Obviously he was cleared to go back into the game last night, so we felt good enough about that when the initial X-Rays were negative," Cowboys coach Jason Garrett said via the team's official website. "But they want to do some more extensive tests. We'll find out more as the day goes on."

According to reports, Romo will undergo an MRI to get more detailed information about his bruised back, but Garrett feels optimistic that the 34-year-old QB will be ready in time for their match against the Arizona Cardinals on Sunday at AT&T Stadium.

"We'll get the tests today, but we anticipate him being ready to go," Garrett said on Tuesday. "When we left the stadium last night, he seemed like he was OK, and we'll get the tests today to verify everything."

Romo has been performing well this season, completing 165-of-242 passes for 1,998 yards in their first eight games for the Cowboys, who are currently on top of the NFC East standings with their 6-2 record.

Losing Romo for their next match would be a huge blow for the Cowboys, considering the fact that they will be going up against the Cardinals, who won in six of their first seven games this season.

Garrett reiterated again, though, that he is not expecting Romo to miss any games, especially after he was cleared to return to action during the fourth period of Monday night's game. However, Romo, who completed 17-of-28 passes for 209 yards on Monday, is not sure if he can practice with the team.

"I'm just trying to figure out how to get through tonight and tomorrow," Romo said after the match via ESPN. "We'll figure out a way to adjust and move on through the week. We've got to get ready for Arizona, and it is going to come up fast."

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