Almost nothing went right for the 49ers when they traveled to Seattle last December.The Seahawks jumped on the Niners early, taking a 21-0 lead less than a minute into the second quarter en route to a 42-13 victory at CenturyLink Field. The noise of the Seahawks' 12th Man seemed to unnerve San Francisco, which absorbed its most lopsided defeat in the Jim Harbaugh era.Cornerback Carlos Rogers said afterward that the whole Seattle experience was "a punch in the face."Now the 1-0 49ers travel again to CenturyLink to face the 1-0 Seahawks in a nationally televised Sunday night game, and some have wondered if the 49ers will be able to cope with the noise and a pumped-up division rival with that wipeout still fresh in their minds.One thing the 49ers will have in their favor this time, however, is wide receiver Anquan Boldin.Boldin should be a steadying presence for the 49ers in a hostile environment. He's a big, physical, wideout who won't be intimidated by trash-talking cornerback Richard Sherman. Boldin has played in plenty of big games – including two Super Bowls – and is coming off a dynamic debut as a 49er, in which he had 13 catches for more than 200 yards in a victory...