Concussions dominate day

It was a rough day for quarterbacks on the opening Sunday of the NFL season.

Kevin Kolb of the Philadelphia Eagles and Matt Moore of the Carolina Panthers left their games with concussions – the same injury that sidelined New York Giants tight end Kevin Boss.

Detroit Lions quarterback Matthew Stafford also was knocked out against Chicago with a right shoulder injury following a blindside sack by Julius Peppers.

Kolb was forced out against Green Bay, ending his first start in the post-Donovan McNabb era after one half. Kolb was hurt in the second quarter when he was tackled from behind by Packers linebacker Clay Matthews. The quarterback fumbled the ball out of bounds and was slow to get up.

Making his third career start, Kolb was looked at by trainers for several minutes on the Eagles’ sideline. He returned to the game for one more series and threw three short incomplete passes.

Kolb went 5-for-10 passing for 24 yards and was sacked twice. He was one of several Eagles injured in the game. Philadelphia linebacker Stewart Bradley also sustained a concussion — and returned to play after his collision

Coach Andy Reid defended his decision to let Kolb and Stewart return because “they were fine” after early testing.

“All the questions that they answered with the doctors registered well,” Reid said. “But as it went on, they weren’t feeling well, so we took them out.”

Eagles Pro Bowl fullback Leonard Weaver (knee), a former Seahawk, and center Jamaal Jackson (elbow) did not return from their injuries. Left tackle Jason Peters sprained his right knee, yet stayed in the game. Weaver has a torn ACL in his right knee and Jackson has a torn biceps in his right arm.

Stafford’s status for Detroit is uncertain. He said he will go through tests this week and is not sure if he’ll be ready to play against Philadelphia.

“I don’t know, we’ll see,” Stafford said. “I will try, though.”

Buffalo’s already banged-up linebacking group could be down another key player after Paul Posluszny sustained what’s being described as a potential long-term knee injury. Though coach Chan Gailey said the injury could be “short term,” he didn’t rule out the possibility that it could be significant.

Houston Texans defensive end Connor Barwin was carted off the field against Indianapolis with a right leg injury.