SEATTLE — It was pointed out this week by San Francisco’s Richard Sherman that he was witness to watching Seattle’s Russell Wilson throw five interceptions in one game. He didn’t see Wilson throw any interceptions on Sunday. Instead, he watched Wilson throw four touchdowns and the Seahawks stay in the middle of the NFC playoff race with a 43-16 blowout win over the 49ers. Wilson tossed three first-half touchdowns on just four completions as the Seahawks (7-5) won their third straight game, jumping to a 20-0 lead and beating the 49ers for the ninth straight time. “We didn’t throw it that much but we were able to make some huge plays when we did,” Wilson said. Seattle won’t be NFC West champs after the Los Angeles Rams clinched the division on Sunday.