Brock Purdy Fantasy Football Week 18: Stats and Projections vs. Seahawks

In Week 18 (Saturday at 8 p.m. ET), QB Brock Purdy and the San Francisco 49ers will meet the Seattle Seahawks, who have the 12th-ranked pass defense in the league (198.6 yards allowed per game).

Thinking about Purdy for your DFS roster, with his next game versus the Seahawks? We've got stats and info for you below.

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Brock Purdy Week 18 Fantasy Football Projection

• Matchup: San Francisco 49ers vs. Seattle Seahawks
• Game Date: January 3, 2026
• Game Time: 8 p.m.
• Projected Fantasy Points: 17.8
• Projected Passing Yards: 257.02
• Projected Passing TDs: 1.77
• Projected Rushing Yards: 16.05
• Projected Rushing TDs: 0.16

Projections provided by numberFire

Purdy Fantasy Performance

• At the QB position, Purdy is currently the 24th-ranked fantasy player (48th overall), posting 172.2 total fantasy points (21.5 per game).
• Through his last three games, Purdy has completed 72-of-97 passes for 893 yards, with 11 passing touchdowns and two interceptions, resulting in 94.0 total fantasy points (31.3 per game). With his legs, he's added 83 rushing yards on 15 attempts with two TDs.
• Purdy has accumulated 1,254 passing yards (111-of-158) with 13 TDs and five picks in his last five games, leading to 118.4 fantasy points (23.7 per game) during that stretch. On the ground, he's contributed 103 yards rushing on 23 carries with three touchdowns.
• The peak of Purdy's season as a fantasy producer came against the Chicago Bears last week, as he put up 36.9 fantasy points by scampering for 28 yards and two TDs on six attempts.
• From a fantasy perspective, Brock Purdy delivered his worst fantasy-point total of the campaign (7.3 points) in Week 12 against the Carolina Panthers, throwing for 193 yards and one touchdown with three picks.

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Seahawks Defensive Performance

• Seattle has given up more than 300 yards passing to only two players this season.
• The Seahawks have given up at least one passing TD to 12 opposing QBs this season.
• A total of seven players have thrown for two or more TDs against Seattle this season.
• The Seahawks have given up at least three passing TDs to only one opposing QB this year.
• Seattle has allowed over 100 yards receiving to four players this season.
• The Seahawks have given up a touchdown catch by 19 players this year.
• Seattle has given up at least two receiving TDs to just one player this year.
• The Seahawks have not allowed more than 100 yards rushing to an opposing player this year.
• Seattle has given up at least one rushing TD to eight players this season.
• The Seahawks have allowed at least two rushing TDs to just one player this year.

Want more data and analysis on Brock Purdy? Check out FanDuel Research for all the latest and in-depth fantasy and betting coverage.