Philadelphia Eagles quarterback Donovan McNabb is week to week after fracturing a rib during Sunday's 38-10 season-opening rout of the Carolina Panthers, a source with knowledge of the situation told NFL Network's Jason La Canfora.
According to the source, McNabb's status depends on his pain threshold and whether anything aggravates the injury. Returning for next week's home game against the New Orleans Saints might be ambitious, but McNabb will be evaluated throughout the week.
Philadelphia's dominant performance at Carolina was tempered by concerns about McNabb, who cracked the rib during the third quarter when several defenders hit him on his 3-yard touchdown run. McNabb didn't immediately get up after the touchdown, and Eagles trainers attended to the quarterback before he eventually left the field on his own.
"Don is very resilient," said Eagles running back Brian Westbrook, who caught one of McNabb's two touchdown passes. "He heals fast."
While McNabb was on the ground, television cameras captured Eagles third-string quarterback Michael Vick standing in a stadium suite to watch his teammate. Vick is suspended for the first two regular-season games to complete NFL-mandated penalties for bankrolling a dogfighting ring.
Eagles backup quarterback Kevin Kolb replaced McNabb, who was 10 of 18 passing for 79 yards with two touchdowns and one interception. McNabb also ran for 27 yards and the TD.
The Associated Press contributed to this report.