Seattle Seahawks quarterback Matt Hasselbeck was taken to a hospital for X-rays and a CT scan after injuring his ribs on a hard hit late in the second quarter against the San Francisco 49ers on Sunday.

The X-rays were negative while the CT scan was inconclusive, said Seattle coach Jim Mora, and Hasselbeck rejoined his teammates for the 2-hour flight home shortly after the 23-10 loss to the 49ers.

"It is a rib bruise at this point," Mora said. "He's doing much better. ... We believe at this point, and it's very preliminary, that he's going to be OK."

Hasselbeck went down for several minutes with 26 seconds left before halftime when 49ers linebacker Patrick Willis stuck him in the back as the QB was trying to dive for the end zone and was stopped at the 1-yard line.

Hasselbeck got up and was wobbly as he made his way to the sideline, where he fell to his knees and was quickly swarmed by Seattle coaches and trainers.

"I don't know how you tell him to do anything different than he did," Mora said. "You love to see that but you hate to see the results. We'll keep our fingers crossed."

New York Giants defensive end Justin Tuck left the game against the Dallas Cowboys in the third quarter with a shoulder injury and Giants receiver Domenik Hixon left the game with a sprained knee.

After losing Donovan McNabb in Week 1, the Eagles lost running back Brian Westbrook when he sprained his right ankle against the Saints. He hopes he'll be able to play next week.

Westbrook had his ankle taped in the third quarter. He had 52 yards rushing on 13 attempts.

Westbrook says the ankle feels sore. He had surgery to remove scar tissue and bone fragments from his right ankle in June.

The injuries mounted fast for the Buffalo Bills, who had two players — right tackle Brad Butler and tight end Derek Schouman — carted off the field with knee injuries against Tampa Bay.

Butler did not return after hurting his right knee late in the first half. Schouman was carted off the field after twisting his right knee while being tackled after a 6-yard catch with a minute left in the third quarter.

Schouman's injury left Buffalo with one tight end, Derek Fine, after Shawn Nelson left with a strained shoulder.