Sherman sparks Seattle victory

Two interceptions key as Seahawks stop Kaepernick.

SANTA CLARA, CALIF. — Richard Sherman set up the only touchdown with another key defensive play in this heated rivalry, then had a second interception with the 49ers driving late as the Seattle Seahawks ended a fivegame losing streak on San Francisco’s field with a 19-3 win Thursday night.

Steven Hauschka kicked four field goals and the Seahawks’ stout defense held Colin Kaepernick and Michael Crabtree in check as Seattle (8-4) overcame 14 penalties for 105 yards, including an offensive pass interference that negated a touchdown.

The Seahawks boosted their playoff hopes as Russell Wilson passed for 236 yards and outplayed Kaepernick, who had one of his worst performances for the 49ers (7-5).

After his second pick, Sherman looked at those fans still remaining in half-empty stadium on a Thanksgiving night and gave them the hush sign with his pointer finger to his mouth, then waved goodbye. The Seahawks won by the identical score they beat first-place Arizona five days earlier.

Kaepernick was just 16for-29 for 121 yards.

Seattle cost itself key chances to build the lead because of penalties, including an offensive pass interference against Robert Turbin that nullified Paul Richardson’s 7-yard TD catch from Wilson.

Seattle held the 49ers scoreless at home in the first half for the first time since Tampa Bay did so on Nov. 21, 2010.

Sherman intercepted Kaepernick’s deep thirddown pass on the right sideline in the first quarter to help set up Wilson’s 13-yard touchdown pass to Turbin.

A wide-open Turbin easily took the ball down the left sideline on a pretty catch-and-run before beating cornerback Chris Culliver into the end zone to give the defending Super Bowl champions the early edge in the first of two meetings between the NFC West rivals in a three-week span.