Dallas Cowboys quarterback Tony Romo is expected to miss about two months because of a broken left collarbone, though he won't need surgery.

The loss of Romo in Sunday's 20-10 victory at Philadelphia means the defending NFC East champion Cowboys (2-0) will be without their starting quarterback and All-Pro receiver Dez Bryant possibly through October.

Coach Jason Garrett said Monday that tests revealed no ligament damage for Romo after the second broken collarbone of his career. The other was in 2010, and he missed the final 10 games of the season. However, Dallas was out of playoff contention before he could have returned.

The most optimistic time frame for Romo's return is during a two-game Florida swing on Nov. 15 (Tampa Bay) and Nov. 22 (Miami). Otherwise, his absence could approach three months if he skips a short week for the Thanksgiving home game against Carolina and returns Dec. 7 at Washington. Dallas hosts Atlanta (2-0) on Sunday.

Brandon Weeden is the backup.

Stafford hurting

Coach Jim Caldwell said he's not certain whether Matthew Stafford will be available for this weekend's game against the Broncos after the Lions quarterback emerged from Sunday's 26-16 loss to the Vikings battered, bloodied and bruised.

"We'll see," Caldwell said. "Like I said, he's very, very sore, there's no question about that. He got hit far too many times."

The Vikings sacked Stafford just one time Sunday, but he took eight hits, including several punishing blows.

Lacy's X-rays negative

The X-rays that were taken of Packers RB Eddie Lacy's injured right ankle were negative, but a timetable for his return isn't known.

Lacy came out of the Packers' 27-17 victory over the Seahawks on Sunday night in the first quarter after LB K.J. Wright rolled onto Lacy's ankle, causing it to twist badly.

Cutler may miss time

The Bears remain uncertain as to just how long quarterback Jay Cutler will be out because of a hamstring injury he suffered during Sunday's 48-23 loss to the Cardinals.

Bears coach John Fox said Cutler has a strained hamstring. He described it as "not really severe" and said another update will be provided Wednesday when the Bears return to practice.

Brees hurts shoulder

Saints coach Sean Payton isn't ready to say whether he expects Drew Brees to miss snaps because of a hit he took to his throwing arm.

"It's early right now. Today's the day after [the injury]," Payton said when asked if he'd consider resting Brees this Sunday at Carolina. "Certainly we'll do the best thing for him and where he's at."

Sunday Brees acknowledged that one of the hits he took hurt his throwing shoulder and probably affected him on some throws.

Raiders' LoCasale dies

Al LoCasale, who spent more than three decades as Al Davis' confidant with the Raiders, has died. He was 82. LoCasale joined the Raiders in 1969 and retired in 2003. No cause of death was given.