Notebook | Matt Hasselbeck's knee injury is puzzling

There's a chance the Seahawks will be forced to go with No. 3 quarterback Charlie Frye for a second straight week.

Starter Matt Hasselbeck will need more tests on his injured right knee, coach Mike Holmgren said after Sunday's 27-17 loss to the Green Bay Packers at Qwest Field. Hasselbeck hurt the knee two games ago at New York, and he didn't practice all of last week.

He was inactive Sunday and watched the game from the sideline in street clothes.

"We're a little bit puzzled," Holmgren said about Hasselbeck's injury. "It's hard to put your finger on it."

Initial tests on the knee last week showed no structural damage, but Hasselbeck didn't even attempt to warm up before Sunday's game.

Holmgren was told Hasselbeck hyperextended the knee. He said he might have more of a prognosis on Hasselbeck today when he speaks to reporters at the team's Renton headquarters.

Backup Seneca Wallace was active and could have played a little or in an emergency situation Sunday, Holmgren said, despite a sore calf that he aggravated in a workout last Wednesday.

"He really couldn't play the position the way you'd normally play him," Holmgren said. "Half a dozen plays."

Holmgren expects Wallace to improve from day to day this week and be available to play when the Seahawks go on the road to Tampa Bay this weekend. Wallace could get snaps with the starting offense by Wednesday if his calf is healed enough.

Big beginning for TE

John Carlson was more involved in Seattle's passing offense this week, but that's not saying much. He didn't catch a pass in last week's loss to the Giants.

Carlson caught four passes to lead the Seahawks, and he scored the first touchdown of his career Sunday in the second quarter when Charlie Frye rolled out to his right and lobbed a pass to Carlson who dove into the end zone despite a stiff hit from Packer cornerback Charles Woodson.

Even with that score, Carlson went into the locker room feeling a need to play catchup.

"We didn't move the ball very much," Carlson said. "It was tied going into halftime, but looking up at the scoreboard, they had double the yardage."

Well, almost double. Green Bay outgained Seattle 147-83 in the first half. Carlson caught three of his four passes in the second half, the longest of which was 8 yards.

Robinson starts

Koren Robinson, in his first game as a Seahawk since 2004, got the start Sunday and caught two passes for 23 yards. His 19-yard catch in the first quarter was the longest of the day for Seattle.

Robinson was in against his former teammates, the Packers.

"Good just to see some new people," Robinson said. "But that's about it."

Robinson had dealt with a knee problem that plagued him last season in Green Bay and forced him out of two games with the Seahawks since his arrival last month. He practiced all of last week.

"I'm fine. I felt like I felt all week," Robinson said.

Threes and out

Last week, the Seahawks converted just 1 of 11 third-down plays against the New York Giants. On Sunday, Seattle was 1 for 8 on third downs entering the fourth quarter. It finished 4 of 11, which symbolizes the frustrations with the offense.

"I think we have great calls, but we just ain't getting it done," Pro Bowl tackle Walter Jones said. "We just haven't stayed on the field. Those are drive killers ... and you're putting the defense in a bad situation. We got to figure out what we're doing wrong and try to fix it."

Seven of Seattle's 11 drives consumed just three plays or fewer.

Grant injures knee

Seattle safety Deon Grant went down with a knee injury on the Packers' first play from scrimmage. He collided with fullback Korey Hall after a reception and his left knee gave out.

The injury looked serious, as Grant writhed up and down trying to bend the stiffened knee. Then he was helped off the field to a trainer table and soon afterward walked back to the locker room for further tests. Jordan Babineaux took over at safety in his place.

Grant was back on the field for the Packers' next possession and played on. After the game, he said he felt like he'd popped a ligament and that he'd have the knee further examined.

Notes

• RB Maurice Morris played for the first time since suffering a knee injury in week one. He finished with four carries for 16 yards and caught two passes for 13 yards.

• WR Deion Branch, who suffered a foot injury last week, did not play Sunday.

• P Jon Ryan punted well against his former team, hitting one for 62 yards and averaging 48.8 yards on five punts. The Packers cut Ryan before the season started, and the Seahawks signed him after week one.

• Only 10 teams have started with a 1-4 record and made the playoffs in the Super Bowl era. The most recent team to do so was the 2004 Green Bay Packers.