One of the positions on which you should always have a revolving door in your fantasy football league is at defense.
Defense is a position that should really be determined based on the particular matchups for the weekend.
There are very few teams that you should start each and every week at defense.
Here are three defenses that you should look to start this weekend.
New England Patriots
The New England Patriots may have the 32nd-ranked passing defense, but that's something that may not matter this weekend.
When facing an offense as inept as the Indianapolis Colts, almost any defense is worth a start.
As many yards as New England has allowed this year, they have held opponents to just 20.3 points per game this season.
That's not fantastic, but it's still better than many teams around the league.
Dan Orlovsky is going to turn the ball over. That's going to give you some points.
San Francisco 49ers
What happens when a top-tier defense plays one of the worst offenses in the league?
Lots of fantasy points, that's what.
It's rare that defenses make a huge difference, but in this case the 49ers could. They take on the St. Louis Rams this weekend.
San Francisco leads the league in scoring defense and takeaways.
They are going to add to those totals this weekend.
As poor as the Jaguars have been on offense this season, they have really made up for it with fantastic defensive play.
They have overtaken the Baltimore Ravens as the fourth-ranked defense in terms of total yardage this season.
This weekend, the Jaguars take on the San Diego Chargers.
Typically, that would be a matchup to stay away from. However, Phillip Rivers and the Chargers offense have been terrible in recent weeks.
Their big struggle has been with turnovers. A few key turnovers could lead to a bunch of fantasy points for the Jaguars defense.