Rivera said Smith will be treated week-to-week, and that his star receiver is highly doubtful for the season finale Sunday.
After just one play back in the lineup, Smith limped to the locker room and was ruled out for the day.
Here are other injuries we're tracking Sunday:
- Denver Broncos linebacker Von Miller left with a knee injury in the first quarter of Sunday's game against the Houston Texans. NFL Media Insider Ian Rapoport reports that Miller has a torn ACL, per a source. The Broncos' pass rusher had an MRI Monday that confirmed the tear. Rapoport noted that Miller wanted to go back into the game yesterday, saying that Miller felt okay, and that his knee was stable.
- Free-agent signee Jake Long has helped stabilize St. Louis' pass protection at left tackle. His first season with the Rams could finish in another injury setback. Long was carted off the field with a knee injury in the first quarter of Sunday's game against the Tampa Bay Buccaneers. He did not return to the game. At halftime, coach Jeff Fishertold FOX's Laura Okmin he feared Long suffered an ACL injury.
"Yeah. I tweaked it in the game. It definitely didn't make it feel comfortable," Romo said after his team's 24-23 victory. "Nothing where I felt it was a major thing. The one time, really didn't feel; comfortable. It's in a different spot."
Romo said he was not sure when the injury happened.