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Seahawks 42, 49ers 13

Seahawks rain on 49ers’ bid for West title

SEATTLE — Fueled by its deafening home crowd, the Seattle Seahawks locked up their spot in the postseason Sunday night.

They also reinforced the notion no one in the NFC wants to see them when the playoffs begin, even if they are a wild card.

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Russell Wilson threw a career-high four touchdown passes to move into second place for most TD passes by a rookie, Marshawn Lynch scored two first-quarter TDs, and the Seahawks blew out the San Francisco 49ers, 42-13.

Richard Sherman returned a blocked field goal 90 yards for another touchdown as the Seahawks (10-5) jumped to a 21-0 lead. That only added to an already-hyped crowd on a typically cold and rainy December night, with noise echoing off the walls and overhanging roof of CenturyLink Field.

‘‘That crowd was crazy. They were great,’’ Seattle coach Pete Carroll said. ‘‘And I’m so thrilled we were able to share it with them. They deserve a playoff team and they got it.’’

Seattle will likely be the fifth seed in the NFC. It still can win the NFC West if it beats St. Louis in the season finale and Arizona can upset the 49ers in San Francisco.

The Seahawks, 7-0 at home, delayed San Francisco (10-4-1) from celebrating a division title on Seattle’s turf and turned Jim Harbaugh’s 49th birthday into a miserable, wet evening.

Seattle was the first team since 1950 to score at least 50 points in consecutive weeks thanks to its 58-0 win over Arizona and 50-17 victory against Buffalo. It seemed inconceivable the scoring binge could continue against San Francisco, the best scoring defense in the NFL. But it did.

‘‘It was a lot of points again tonight, and we’re just thrilled about it,’’ Carroll said. ‘‘Things have just changed. We have changed on offense, and Russell has been a huge part of it and the coaches allowing it to happen. We don’t hold ourselves to points because the standard isn’t out there for us. We just try to play really good football and see what happens at the end.’’

Lynch finished with 111 yards on 26 carries, his third straight game against the 49ers topping 100 yards. Wilson wasn’t asked to do much — other than throw TD passes.

He hit Lynch on a 9-yard TD in the first quarter, Anthony McCoy for a 6-yarder late in the first half, and Doug Baldwin on 4- and 6-yard touchdowns in the second half.

Wilson now has 25 TD passes, one behind Peyton Manning’s NFL rookie record of 26. He finished 15 of 21 for 171 yards and his only incompletion in the first half was a deflected pass that Patrick Willis intercepted.

San Francisco’s Colin Kaepernick had already proven himself capable of winning on the road with victories in New Orleans and last week in New England. But Seattle is a different beast, widely regarded by players as the loudest venue in the NFL.

He finished 19 of 36 for 244 yards with an 18-yard TD pass to Delanie Walker with 1:40 left. Frank Gore had just 28 yards on six carries.

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