Brandon Mebane #92 of the Seattle Seahawks tries to fight off a block to tackle DuJuan Harris #26 of the Green Bay Packers during a preseason game at Lambeau Field on August 23, 2013 in Green Bay, Wisconsin. (Photo by Mike McGinnis/Getty Images)

by Curtis Crabtree
KJR reporter
Twitter: @Curtis_Crabtree

RENTON - The Seattle Seahawks devoted most of their resources in the offseason toward improving their defensive line.

Seattle signed DE Cliff Avril, DE Michael Bennett and DT Tony McDaniel in free agency and selected DT Jordan Hill and DT Jesse Williams in the draft.

However, injuries have piled up along the defensive line leaving several key players questionable for the start of the regular season.

Williams was placed on injured reserve Monday as the knee problems that plagued him throughout training camp never subsided. Hill has been sidelined since last week when he suffered a strained biceps in practice.

Avril reaggravated his hamstring injury last week and did not practice Monday. He has yet to play in the preseason and his status for the season opener against the Carolina Panthers is now in doubt.

"We don’t know if he is going to be ready for the opener. We just don’t know," head coach Pete Carroll said.

Starting DT Brandon Mebane injured his groin in practice Monday and his status is now up in the air as well.

"We’ll see what happens," Carroll said.

With DE Chris Clemons still rehabbing from a torn ACL in January and DE/LB Bruce Irvin set to miss the first four weeks due to suspension, the Seahawks now find themselves very thing up front.

With so many players questionable for the start of the season, it could end up altering who the Seahawks have to keep with their cutdown to 53 players this weekend.

--Injury Updates

TE Zach Miller was able to go through a full workload in practice on Monday. Carroll said Miller wants to play Thursday in the Seahawks' preseason finale against the Oakland Raiders but they are still targeting the regular season opener.

"He could play this weekend, and he wants to play this weekend. We’ll figure that out by the end of the week. We’ve been targeting the opener the whole time."

G James Carpenter was back on the practice field after missing a couple weeks to a foot injury. However, until Carpenter can prove he can stay healthy for any considerable length of time, he just won't be very valuable to the team.

"He got a heck of a workout today," Carroll said. "It’s always about how he comes back the next day. It’s great to see him back out there."

Carroll said DT Jesse Williams' knee just wasn't responding to treatment they way they hoped and that led to the decision to place him on injured reserve. He said it was noticable against Denver that he just couldn't hold up physically.

"His knee just wasn’t responding well. It’s going to take a long time to give him the consideration to get him right so it was the right thing we could do for Jesse," Carroll said. "He did everything that we asked of him, and he looked good when he had his chances, but he wasn’t holding up so we just have to give him a big break."

FB Michael Robinson was a spectator at practice as he recovers from illness. The team is still trying to get on top of his ailment but said Robinson is feeling better.

"He was real sick, and there are still some concerns about whatever he got," Carroll said.

WR Sidney Rice was held out as they continue to try and get him ready for the opener. CB Antoine Winfield was back at practice after missing the end of last week with a sore knee.

RB/FB Spencer Ware jammed his wrist on one of the first plays against the Green Bay Packers on Friday and was held out as a precaution.

S Jeron Johnson was absent from practice to attend to a family matter. He was expected back with the team Monday night.

--Roster Moves

The Seahawks have to cut their roster down to a 75-man limit on Tuesday. They began the process on Monday with a handful of moves.

In addition to placing Williams on injured reserve, the team terminated the contract of WR Brett Swain.

The team announced they had waived DT Martin Parker, LS Kyle Nelson, TE Jameson Konz, TE Andrei Lintz, LB Craig Wilkins, LB Kyle Knox and WR Perez Ashford. The league's transaction report also showed the team waived WR Donavon Kemp.

Seattle's roster currently stands at 80 players. They have to make five more roster moves by Tuesday afternoon.

--LS Clint Gresham Gets New Deal

The Seahawks gave a contract extension to LS Clint Gresham on Monday. Gresham was scheduled to make $1.323 million after signing his restricted free agent tender this offseason.

His new deal was first reported by Brian McIntyre of Yahoo! Sports. A source confirmed Gresham will make $1.655 million with a signing bonus of $275,000 over the two-year life of the contract which runs through next season.

The extension saves the Seahawks $555,500 against the salary cap this season.