The Seahawks have confirmed Seahawks tight end Zach Miller had surgery during the bye week on his injured ankle.
The team says an "exact timetable for his return has yet to be determined."
Fox Sports first reported last week's surgery for the 2010 Pro Bowl tight end. Fox said Miller will miss "an extended period of time."
Miller missed two days of practice before the Denver game on Sept. 21 but then played throughout Seattle's overtime win. Coach Pete Carroll said at the end of that week that Miller had improved and was ready for the Broncos game, which he proved to be.
Carroll is due to address the media following this afternoon's practice in Renton.
Miller's ankle surgery leaves Seattle with 2013 fifth-round draft choice Luke Willson and third-year veteran Cooper Helfet as its available tight ends. Nickel back Jeremy Lane is already on the Seahawks' injured-reserve list with the designation to return midseason; teams get only one such designation each season. So the Seahawks are carrying 52 available players on their 53-man active roster for a while.
Though it seems they need to add a tight end during Miller's absence, the Seahawks have used backup tackle Alvin Bailey as an extra tight end in some run-blocking roles.
Miller, 28, had two catches for 12 yards on the bad ankle eight days ago against Denver. He has six catches for 74 yards through three games this season, about on pace to equal the 38 and 33 receptions he had in the previous two seasons. More than that, he is one of Seattle's better run blockers, and has often stayed in this season for pass protection next to rookie right tackle Justin Britt.
Seattle signed Miller in August 2011 as a free agent from Oakland, and he re-structured that contract before this season. He has a base salary of $900,000 for this season with per-game bonuses of $900,000 in a deal that is more cap-friendly for the Seahawks.