He has been grounded a lot earlier this week.
Romo said Tuesday night on teammate Terrell Owens' radio show that he won't be able to return for Sunday's game against the Buccaneers.
"It's going to be Brad (Johnson)," Romo said. "Brad is going to go this week unless something happens that I don't foresee."
Romo suffered the broken digit Oct. 12 at Arizona, but he thought he might be able to avoid missing a start.
Instead, Johnson played, and he turned in a poor performance against St. Louis. The veteran backup completed 17 of 34 passes for 234 yards, and he was picked off three times. His lone touchdown pass in Dallas' 34-14 defeat came in garbage time during the final two minutes.
Johnson must do better this week to salvage a season that is hanging in the balance. Sunday's meeting with the Bucs is a must-win game with the Cowboys having lost three of their last four.
"Right now, we're going to rally around Brad and hopefully we can get two wins out of this and go into the bye and get everyone healthy and go from there," Romo said on Owens' show.
TUESDAY LEFTOVERS: RB Felix Jones is expected to miss a second consecutive game with a slight hamstring tear.
--WR Roy Williams finally signed his six-year, $45 million contract that includes $27 million in guaranteed money over the first three years.
--QB Brad Johnson's touchdown pass against the Rams was the 165th of his career, moving him into a tie with Troy Aikman for 51st on the NFL's all-time passing touchdowns list. Johnson upped his career passing attempts total to 4,282, moving him past Sonny Jurgensen (4,262) for 31st on the NFL's all-time pass attempts list. He is now seven attempts shy of Randall Cunningham (4,289) for 30th.
Johnson's 234 passing yards gave him 28,861 for his career, allowing him to pass Len Dawson (28,711) and Rich Gannon (28,743) for 33rd on the league's all-time passing yards list.
--LB DeMarcus Ware had three sacks against the Rams to tie his single-game career best. It was his seventh career multiple-sack game.
--TE Jason Witten's six catches against the Rams gave him 393 for his career, tying him with Russ Francis and Jackie Harris for 21st on the NFL's all-time tight ends receptions list. Witten's 44 receiving yards allowed him to become just the sixth pass catcher in club history to reach 4,500 career receiving yards.
--CB Adam Jones is gone indefinitely and he will be missed in a secondary that has had a problem making plays on the ball this season. The Cowboys have just one interception and 19 pass deflections in seven games. Jones has 11 of the deflections.
--WR Miles Austin (1,548) became just the 12th player in franchise history to top 1,500 career kickoff return yards. With his 1,548 career kickoff return yards, Austin moved past Ron Fellows (1,478) for 12th on the club's all-time kickoff return yardage list.
--RB Marion Barber rushed 18 times for 100 yards against the Rams. It was his second 100-yard game of the season and sixth of his career.
Romo Out Another Week
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