Zach Miller, Max Unger may not play

As bad as things were last weekend on the Seattle Seahawks' offensive front, it may be worse on Sunday against the Indianapolis Colts.

The Seahawks were without three starters last week, but four starters could miss Sunday's game, including tight end Zach Miller. Both Miller and center Max Unger are listed as questionable for the game at Lucas Oil Stadium.

"Zach tightened his [hamstring] a little bit and we're going to try and wait it out if it's going to be a factor for the game," Seahawks coach Pete Carroll said Friday. "We don't know until game time."

Unger, who missed the Houston game with a triceps injury, was unable to do much at practice again this week.

"We were hoping that maybe he could make a turn," Carroll said of Unger. "It hasn't gone as quickly as we had hoped. I can't tell you more than that. We'll see what happens on game day."

Starting tackles Russell Okung and Breno Giacomini are out, so the Seahawks may start four backups up front on offense.

Miller not only is the best blocker of Seattle's three tight ends, he also is the best receiver of the group. But Carroll has confidence in rookie tight end Luke Willson.

"Luke has done a good job," Carroll said. "Yeah, he has measured up. We're anxious, really I'm anxious, to see him play and take over this role and get a lot of responsibility. It'll be good to see him."

Seattle also has veteran tight end Kellen Davis, who the Seahawks signed three weeks ago.

"Both of those guys have been playing in the games and been part of the game plans," Carroll said of his backup tight ends. "So that's no big deal, but they're going to have to play more and be more involved if Zach can't go."