One. Two.

After another offseason full of change, two players are all that are left. from the Seahawks’ Super Bowl appearance at the end of the 2005-2006 season.

A lot has happened since then. Relative success in the 2006 and 2007 seasons (19-13 record, two playoff appearances), relative failure in 2008 and 2009 seasons (9-20 record, two coaching changes). Then there was 2010 and the arrival of Pete Carroll.

That 2005-2006 season revolved around a dominant offensive line. Left tackle Walter Jones and left guard Steve Hutchinson each made the Pro Bowl and earned first-team All-Pro mentions. Center Robbie Tobeck also made the Pro Bowl. Add in a solid right guard in Chris Gray and right tackle Sean Locklear and the team’s offensive line combined for 79 of 80 possible starts.

The consistency that made that team so good started to wane as players got older and grew out of their primes. Seattle changed coaches from Mike Holmgren to Jim Mora Jr., then after one season from Mora to Pete Carroll. With Carroll’s arrival, more change.

While faces came and went, the team’s two biggest stars, quarterback Matt Hasselbeck and linebacker Lofa Tatupu, seemed to be ever-present. Until this offseason. Hasselbeck signed with the Tennessee Titans as a free agent, and the team released Tatupu after the two sides failed to reach agreement on a restructured deal.

Hasselbeck’s departure will leave the biggest questions. Hasselbeck had been in Seattle since 2001, led the franchise to its greatest heights and become the face of the franchise for many fans.

“There’s a great amount of respect that we have for Matt – it’s enormous,” general manager John Schneider said early in training camp. “Everything he’s done for this team, this community, charities, and being the family man and strong Christian man he is, in addition to being a phenomenal person. It was a really big decision, a very hard decision.”

All of that doesn’t even mention Hasselbeck’s place on the field behind center. While he battled injuries over the years (he played a full 16 games twice in the past six years), he was mostly effective when he was on the field. He did struggle with patchwork offensive line in 2010, totaling just 12 touchdowns to 17 interceptions.

The team brought in 28-year-old quarterback Tarvaris Jackson via free agency and almost immediately named him as the starter. Jackson never got the opportunity to start for a full season for the Minnesota Vikings, but he was up and down in limited action.

“The quarterback and the head coach in my opinion are the most important people in the building,” Schneider said. “The further we got into the lockout, the more sense it made to make a run at Tarvaris when the lights came back on.”

Jackson has one big advantage over backup Charlie Whitehurst – he knows the offense. Jackson worked with current Seahawks offensive coordinator Darrell Bevell while he played in Minnesota.

Familiar names will take over Tatupu’s spot. David Hawthorne will move over from outside linebacker to middle linebacker. Hawthorne has seen quite a bit of action in his three years with the Seahawks and should be ready to take the role full-time.

“I think David Hawthorne is ready,” Carroll said. “He’s been ready. When Lofa got hurt years ago, he took over for quite some time. When he saw his opportunities when Lofa couldn’t practice or something like that… he’s ready for this opportunity.”

Leroy Hill will take Hawthorne’s old starting spot at weak side linebacker. Hill was thought to be a critical part of the Seahawks’ future when he picked up 7 1/2 sacks as a rookie in 2005. Hill remained productive through but ran into injury and legal concerns the past two seasons. He played just one game in 2010. Now fully healthy the team will need him to return to the level he played at early in his career to help fill the void left by Tatupu’s departure in the middle of the defense.

One thing that’s clear is that this is a new team, a changed team. The Super Bowl run six years ago seems like a distant memory. The only players who remain are cornerback Marcus Trufant and Hill. With Hasselbeck and Tatupu gone the Seahawks will be searching for an identity in 2011.