IRVING, Texas -- A CT scan on Tuesday morning revealed Cowboys quarterback Tony Romo will not need surgery for his broken left clavicle, coach Wade Phillips announced on Tuesday.
Phillips said Romo would be sidelined six to eight weeks, with the longer time period more likely, sources said.
It is possible that Romo will not play again this season since that timetable would not permit him to return to the lineup until mid-December. At that point, the Cowboys would probably be inclined to hold Romo out to avoid the potential of him reinjuring the shoulder, unless backup Jon Kitna puts the Cowboys in playoff contention during Romo's absence.
Phillips said he talked to Romo on Tuesday and said the quarterback was a little down. He didn't say when Romo could begin throwing again.
"He's going to be sad for a while," Phillips said. "But then you've got to pick it up and go."
The Cowboys are 1-5 for the first time since 1989, when owner/general manager Jerry Jones' first Dallas team finished 1-15.
Romo suffered the injury with 12:07 to play in the second quarter after completing a pass to wide receiver Miles Austin. The quarterback was hit by Giants weakside linebacker Michael Boley, who came on a blitz. Romo's left shoulder crashed into the turf as Boley tackled him to the ground.
"When he hit the ground, I heard he let out a little scream," Boley said. "So I knew something was up. But I didn't think he was going to lay down. I thought it was just a normal hit."
Romo lay on the field for several moments as a team of trainers and doctors attended to him. Romo's best friend on the team, tight end Jason Witten, along with rookie wide receiver Dez Bryant hovered over their quarterback.
"I tried lifting my shoulder and it hurt like heck, but I was like, 'OK, it will just keep getting better,'" said Romo, who suffered the same injury to his right shoulder when he was a teenager. "The adrenaline of the game will allow me to [play], it's my left shoulder, I don't need to use it too much. I will figure out a way what I can handle when I'm out there, but that was before I knew it was broken."
In other injury news, Cowboys cornerback Terence Newman has a rib muscle strain, suffered during a first quarter interception. Newman is OK, but very sore.
Left guard Montrae Holland, who started in place of injured Kyle Kosier (strained right Achilles and high right ankle sprain), has a slight groin strain and he's listed as day to day. It's doubtful Kosier could return to practice this week.
If Kosier and Holland are unavailable, Phil Costa most likely will make his first NFL start at left guard.
Information from ESPN's Ed Werder and ESPNDallas.com's Calvin Watkins was used in this report.