Deciding which fantasy football defenses to target and avoid in a given week is largely based on their matchups. The best options are often in favorable situations, typically against weaker quarterbacks who are prone to sacks and turnovers.
Here are some of the top defenses to target and fade in the Week 1 slate of games for the 2025 season.
Fantasy Football defenses for Week 1


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Defenses to target in Week 1
Denver Broncos
The Denver Broncos were the highest-scoring overall defense in fantasy football last year and have a favorable situation to kick off Week 1 this season. They will face off against the Tennessee Titans at home, with rookie quarterback Cam Ward making his NFL debut in one of the most challenging road stadiums to play in.
Minnesota Vikings
The Minnesota Vikings recorded 49 sacks last year, the fourth-most of any team in the NFL. This gives them an excellent matchup against the Chicago Bears in Week 1, considering Caleb Williams was the most sacked quarterback in the NFL last season.
Arizona Cardinals
The Arizona Cardinals are an ideal example of a streaming defense for Fantasy Football in Week 1, despite having a poor season-long outlook. They will take on the rebuilding New Orleans Saints, who have one of the weakest rosters in the league, including quarterback Spencer Rattler as their starter.
Defense to avoid in Week 1
Cleveland Browns
The Cleveland Browns are a solid weekly streamer in the right situations for fantasy football, but Week 1 of the 2025 season is not one of them. Joe Burrow is coming off a season in which he threw just nine interceptions and leads the Cincinnati Bengals, who possess one of the most high-powered scoring offenses.
Baltimore Ravens
The Baltimore Ravens are a desirable target for season-long rosters after concluding last season with three consecutive weekly finishes among the top four defenses. They should still be avoided against the Buffalo Bills and reigning MVP Josh Allen in Week 1.
Seatle Seahawks
The Seattle Seahawks were consistently solid in fantasy football last year, ranking among the top 12 weekly defenses nine times in 17 games. None of those came in their two matchups against the San Francisco 49ers, who were without a healthy Christian McCaffrey. The star running back is expected to make his return in Week 1, making the Seahawks defense a clear fade this week.
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