Last week, several defenses put up some really big fantasy games. The Chiefs forced Ryan Fitzpatrick into six interceptions and recorded 32 fantasy points for the day. Week 4 of the fantasy Football season features another slate of games that will give plenty of defenses chances to put up big numbers again. Let's take a look at the ten best options for week 4.

1. Cardinals D/ST.

The Cardinals might have lost to the Bills in shocking fashion last week, but it doesn't change the fact that they are a top flight defense this week. The Rams have started the season 2-1, but it certainly hasn't been a product of their offense.

The Rams scored 37 points in week 3 and still allowed 8 fantasy points to a mediocre Buccaneers defense. Case Keenum will struggle on the road and the Cardinals should be week 4's best fantasy defense.

2. Texans D/ST.

The Titans are not very good at scoring points. Their defense is reliable, but Marcus Mariota struggles far too much on offense. Those struggles mean opportunities for opposing fantasy defenses, which routinely shut down the entire Tennessee offense. Expect some big week 4 numbers from the Texans defense.

3. Redskins D/ST.

The Cleveland Browns shockingly managed to score 24 points against a tough Dolphins defense in week 3. Don't let that performance fool you. Cody Kessler struggled until the very end and could easily throw a ton of interceptions against a tough Redskins defense that will be riding a lot of momentum after a victory against the Giants.

4. Patriots D/ST.

If the Patriots are going to beat the Bills without Tom Brady, they will need to limit the Bills offense. I'm betting that Bill Belichick will know exactly how to do that in week 4 against a Bills offense that relies primarily on the run. When Tyrod Taylor is forced to pass, he makes poor decisions and is either sacked or throws some interceptions.

5. Broncos D/ST.

The Broncos were one of the best defenses in fantasy football last year and are still an elite option this year. The Broncos will get to play Jameis Winston on the road in week 4 and shouldn't have any problems forcing a few turnovers. However, the game is on the road. Approach this matchup with a bit of caution and don't expect a double digit fantasy performance from the Broncos in this one.

6. Vikings D/ST.

The Vikings defense is now the best fantasy defense of the year. The Vikings went into Carolina and absolutely shut down Cam Newton, scoring 25 fantasy points in the process. In week 4, the Vikings will take on a Giants offense that struggles to hold onto the ball. Shane Vereen fumbled last week and Eli Manning also tossed an interception. The Vikings defense should again have a dominant performance and deliver for fantasy teams in week 4.

7. Buccaneers D/ST.

This defense isn't particularly good at limiting yardage, but they are good at scoring touchdowns. Trevor Siemian is a very inexperienced quarterback who could easily be forced into some mistakes on the road. The game between the Broncos and the Buccaneers should be fairly low scoring, which means fantasy opportunities for both defenses.

8. Bengals D/ST.

Ryan Tannehill somehow manages to throw an ugly interception in half the games he plays. In week 3, he tossed an awful pick that resulted in a Browns touchdown. The Bengals defense is better than the Browns and could easily take advantage of the opportunity if it should arise.

9. Ravens D/ST.

The Baltimore Ravens have quietly assembled a defense that is limiting a lot of offenses. The Ravens are off to a quiet 3-0 start and get to play against a Raiders offense that looked inept against the Titans. If the Raiders run game gets shut down, the Ravens defense will get chances to pick off Derek Carr andscore more fantasy points.

10. Seattle D/ST.

Ryan Fitzpatrick threw six interceptions last week!

Seattle's defense isn't as good on the road, but they will be a solid fantasy option against a Jets team that is fairly turnover prone.

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