The Seattle Seahawks placed kicker Steven Hauschka on injured reserve because of a calf injury and signed veteran kicker Ryan Longwell, the team announced Wednesday.

Seattle also signed defensive end Patrick Chukwurah after placing Chris Clemons on injured reserve.

Hauschka, 27, strained his calf muscle during the Seahawks' victory over the Redskins on Sunday. He had made 24 of his 27 field goal attempts in the regular season and made all three of his attempts against Washington last week.

Clemons, who had 11.5 sacks this season, suffered a torn ACL and meniscus in his left knee in Sunday's win over Washington.

The Seahawks will face the Falcons in Atlanta on Sunday for the right to advance to the NFC Championship Game.

Longwell, 38, made 22 of 28 field goal tries for the Vikings last season but until Wednesday hadn't signed with a team since being cut in May after Minnesota drafted kicker Blair Walsh in this past April's draft.

Chukwurah has not played in an NFL game since 2007 with Tampa Bay. He spent the 2009 and 2010 seasons in the UFL with the Florida Tuskers, where he led the league in sacks.

Longwell and Seahawks general manager John Schneider were with the Green Bay Packers together until Longwell signed with Minnesota for the 2006 season.