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

Quarterback Brock Purdy is looking at a matchup against the 12th-ranked passing defense in the league (198.6 yards allowed per game) in Week 18, when his San Francisco 49ers meet the Seattle Seahawks, Saturday at 8 p.m. ET.

For more info on Purdy, if you're thinking about him for your daily fantasy lineup, scroll down prior to his upcoming matchup versus the Seahawks.

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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

• With 172.2 fantasy points in 2025 (21.5 per game), Purdy is the 24th-ranked fantasy player at his position and 48th overall.
• In his last three games, Purdy has amassed 94.0 fantasy points (31.3 per game), connecting on 72-of-97 passes for 893 yards, 11 touchdowns, and two interceptions. He's added 83 rushing yards on 15 carries with two touchdowns on the ground.
• Purdy has amassed 118.4 fantasy points (23.7 per game) in his last five games, completing 111-of-158 throws for 1,254 yards, with 13 touchdowns and five interceptions. He's added 103 rushing yards on 23 carries with three touchdowns on the ground.
• The high point of Purdy's fantasy season was last week's outburst versus the Chicago Bears, a game when he went off for zero catches and zero receiving yards (36.9 fantasy points).
• From a fantasy standpoint, Brock Purdy delivered his lowest fantasy-point total of the year (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 over 300 yards passing to only two players this year.
• A total of 12 players have thrown for at least one TD against the Seahawks this year.
• A total of seven players have thrown for two or more TDs versus Seattle this season.
• The Seahawks have allowed just one player to throw for three or more touchdowns in a game this season.
• Seattle has allowed four players to pick up over 100 yards receiving in a game this year.
• The Seahawks have allowed 19 players to catch a TD pass against them this season.
• Just one player has hauled in more than one touchdown pass versus Seattle this season.
• No player has put up more than 100 yards on the ground in a game versus the Seahawks this year.
• A total of eight players have rushed for at least one touchdown against Seattle this season.
• Only one player has rushed for more than one TD versus the Seahawks 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.