The Jets signed wide receiver Greg Salas off the Eagles' practice squad yesterday. That opens a spot for tight end Emil Igwenagu, released from the 53-man roster on Monday, should the Eagles want to keep him around . . . Bill Davis said safety Patrick Chung's shoulder injury is a nerve problem . . . LeSean McCoy's NFL-high 630 rushing yards are the most through six games of any back in Eagles history . . . Michael Vick said he changed his stretching routine before the Giants game in which he injured his left hamstring, and was overstriding when he suffered the injury, running out of bounds . . . Riley Cooper's four-catch, 120-yard day Sunday a half-hour from his home turf in Clearwater, Fla., was witnessed by his parents and many other relatives and friends, Cooper said yesterday, but he regrets his sister Lindsey, a soccer player at Florida, had a game at Missouri and had to miss it . . . Davis seconded Chip Kelly's Monday assertion that defensive lineman Fletcher Cox played his best game of the season in Tampa. "A lot of those holding calls [occurred] where they couldn't block Fletch," Davis said.