"I feel it getting better," Vick said Tuesday. "It's just when I try to work it, the knot is still there. I think another week of rehab will put me in a position where I can gain some confidence in it, and [in] doing the things I normally do."
Foles continues to take the first-team snaps at practice. Offensive coordinator Pat Shurmur said that the Eagles would continue going with Foles and that coach Chip Kelly would address the quarterback decision when both Vick and Foles are healthy.
"I'm going into this week like I always do. I work every day like I'm a starter," Foles said. "You get more reps with [the first-team offense]. But no matter what happens - if I'm not getting reps, I'm getting mental reps and what throws I didn't get if I'm not getting the first-team reps, I'm going to throw after, so it sort of works the same way."
When Vick was asked if the decision to return is his to make, he said there are multiple factors.
"We have too good of a [backup] quarterback to push it," Vick said.
Foles' first start left the Eagles in a strong position, although it also left them with uncertainty about who will start the remainder of the season. The Eagles' No. 2 quarterback went 22 of 31 for 296 yards and three touchdowns against Tampa Bay and ran for a score. He did not turn the ball over.
Since that performance, Kelly has declined to address who will start when Vick is healthy, essentially stimulating the quarterback controversy. With an unequivocal answer, there would be no debate. With the uncertainty, there is intrigue.
The quarterbacks say they don't think about it in those terms. Eventually, they're going to need to think. Certainly, Kelly must.
"I'll leave that for Chip," Vick said. "I'm not focused on what could be or what should be. Right now I have to rehab and I have to get myself back to 100 percent so I can help this team. I'm not going to try to make that determination right now."
Vick said that the timetable for his return would be different if he were a drop-back quarterback. But because of his running ability, he said, he sees and feels the game differently than other quarterbacks. Further injury would push him back another two or three weeks, he said.
He noted that hamstring injuries are common for "fast guys," but they've never bothered him. However, he tried a different stretching regimen before he was injured against the Giants and tried overstriding rather than leaning when he ran. Vick said he knows what he did wrong and it will not occur again.
"I was just trying to do too much," Vick said. "That's how much I wanted to win the game."
Vick was healthy enough to be an emergency quarterback last week, but not healthy enough to start. He said he could play in an emergency situation, but it would be like a seven-on-seven drill where he stays in the pocket.
"But seven-on-seven is kind of unrealistic on Sundays, because you've got people coming at you," Vick said. "So being an emergency guy, that's what I'm going to be, if that's the case."
Foles' performance Sunday was no doubt a confidence builder, but the 24-year-old said he puts any thoughts about previous games behind after 24 hours. In college, he said, there were games that filled him with confidence and affected his next performance.
His quarterbacks coach at Arizona, Frank Scelfo, instilled in him the 24-hour rule, Foles said, and it has helped him avoid emotional turbulence and become a better player.
"As soon as those 24 hours are up, you move on," Foles said. "No matter what. You can throw four touchdowns, you can throw whatever. You can't go out here after you have a great game and have a horrible practice. What does that show the team?"
That's why Foles' attention is now on the Cowboys game. He'll likely start, and another sterling performance could continue to muddle a once-clear quarterback situation.
But if there's any overt excitement lingering after a win at Tampa Bay that bolstered his starting credentials, Foles refused to show it.
"When I see the game, I'm excited we won, it's exciting," Foles said. "But I also know from playing this game for a long time, last week's win can't win this week's game."
Safety Patrick Chung's shoulder injury involves a nerve, defensive coordinator Bill Davis said. Davis said Chung is experiencing pain and the injury is a "wild card." Chung did not practice on Tuesday. . . . Tackle Jason Peters (shoulder) and running back Chris Polk (shoulder) attended practice but did not appear to participate. Tight end James Casey, who missed last week's game with a groin injury, returned to practice. The Eagles do not release an injury report on Tuesdays. . . . Wide receiver Greg Salas was signed by the New York Jets off the Eagles' practice squad.