SANTA CLARA — The last time the 49ers looked dominant, they failed to sustain their momentum.
After Week 5, coming off a big win over the Dallas Cowboys, the 49ers were undefeated and looked invincible. After three weeks, they were 5-3 and needed a bye week to recalibrate.
Now, San Francisco is on a four-game winning streak, including a 42-19 win over the Philadelphia Eagles on Sunday.
What lies ahead is a key NFC West game against the Seattle Seahawks on Sunday at Levi’s Stadium.
“I think that’s the toughest thing in this league,” 49ers cornerback Fred Warner said. “You go through these high emotions. Last week, when you beat Philly, and then two days later, you have to completely wash it off and focus on the next game.
“We know very well what happened the last time we beat an NFC East team. Obviously we are aware of that.”
The 49ers (9-3) face the Seahawks (6-6) for the second time in three weeks.
On Thanksgiving, the 49ers pulled away in the second half for a 31-13 win. This was the first time in franchise history that the 49ers had won games in Seattle in consecutive seasons.
“They’re going to get some guys back that weren’t healthy last time,” Warner said, referring to Seattle running back Kenneth Walker.
“We have to make sure we’re connected and focused. Philly is done and done with. We’re not talking about Philly from now on. We’re in Seattle.”
Also, Seattle quarterback Geno Smith was bothered by a triceps injury when the two teams met in Week 12. The Seahawks played back-to-back games on Thursday, so they came to town with three extra days of rest.
“It’s like any other game, for the most part,” 49ers linebacker Dre Greenlaw said. “Any team, former rival or former rival, you always want to play your best. There are certain teams like that. When we play Seattle, it’s going to be a physical game.”
The 49ers have reeled off four straight wins over the Seahawks, including a 41-23 win in the first round of the NFC playoffs last season.
Coming off an emotional victory in Philadelphia, the 49ers’ next goal is to remain in the NFC’s No. 1 seed position, which includes home-field advantage in the postseason and a first-round bye.
“When you’re a really good team, those are the types of weeks where you have to not fall into the trap of feeling good about yourself and go out and take it to another level,” 49ers defenseman Nick Bosa said. “If we can do that, we are exactly where we need to be.”
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