San Francisco at Seattle

San Francisco won the first meeting 27-7 and it went UNDER by six points. This time Brock Purdy will be behind center for the 49ers, off an impressive debut as the starter in last week's 35-7 victory over Tampa Bay. The Niners have allowed an average of just 10.6 points their past six games. They had a somewhat conservative offense with Jimmy Garoppolo, and will likely keep it that way with Purdy, even after last week's win. Seattle has lost three of four and Geno Smith's production has tailed off a bit since earlier in the season. He went 21 of 36 for 264 yards with two interceptions as the Seahawks lost 30-24 to Carolina, and Seattle managed only 46 rushing yards. Seattle is 10-4 UNDER its past 14 against teams with winning records, and San Francisco is 9-3 UNDER versus winning teams, going 7-3 UNDER following an ATS win. Also, the 49ers are 4-1 UNDER their past five after scoring at least 30 points their previous game. Play the UNDER.