NFL Week 18 IDP Start/Sits

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Don’t set your defensive fantasy lineups for the fantasy playoffs in Week 18 of the NFL season without consulting the IDP Guys’ Week 18 IDP start/sits article!

Welcome to the NFL Week 18 IDP Start/Sits article!!

Table of Contents

Thursday Night Game
Tampa Bay Buccaneers at Atlanta Falcons
Sunday Early Afternoon Games
New England Patriots at Buffalo Bills
Minnesota Vikings at Chicago Bears
Baltimore Ravens at Cincinnati Bengals
Detroit Lions at Green Bay Packers
Houston Texans at Indianapolis Colts
Tennessee Titans at Jacksonville Jaguars
New York Jets at Miami Dolphins
Carolina Panthers at New Orleans Saints
New York Giants at Philadelphia Eagles
Cleveland Browns at Pittsburgh Steelers
Sunday Late Afternoon Games
Dallas Cowboys at Washington Commanders
Los Angeles Chargers at Denver Broncos
Kansas City Chiefs at Las Vegas Raiders
Sunday Night Football
Los Angeles Rams at Seattle Seahawks
Monday Night Football
Arizona Cardinals at San Francisco 49ers

It shouldn’t be necessary to say this, but these are only suggestions. We don’t sit in on team meetings; we absorb as much information as possible and then make calls based on that knowledge. If you don’t agree with our suggestions, by all means, go in a different direction. Nobody makes these decisions for you.

Article Key


These players have the best outlook based on their opportunity, past production, talent level, and matchup. They usually have a solid floor and an excellent ceiling. These guys should be the nearest to guaranteed production you can find.

If You Must

These players should earn a reasonable amount of points. Their opportunity, talent, or matchup is typically not on par with a trusted player. Tier two players are usually a good option in deep leagues that start multiple players at each position.


Sit these players unless you’re desperate. You should not start these players for any number of reasons. They aren’t necessarily bad players. We just don’t predict them to be scoring well this game week. In the case of rookies, for example, they may simply need time to earn more playing time and, therefore, our trust as fantasy starters.

Any player not listed in these three categories should probably be considered a “sit.” If they become IDP-relevant on a week-to-week basis, they will likely end up in one of the categories above.

No Cornerbacks?

Johnny writes a separate article for CBs that drops on Fridays, and you can find it here once it is published.

True Position Designations

In some IDP leagues, certain positions are grouped in a suboptimal way, primarily because of outdated interpretations of what players at each position do. Many IDP leagues are turning towards True Position formats to address that problem. To know more about IDP True Position, click here to read the article written by Jase!

Let’s get into the NFL Week 18 IDP Start/Sits!

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Click here to read the Week 18 Fantasy Football Start/Sits article for offensive players.

Thanks for taking the time to read our NFL Week 18 IDP Start/Sits article. We hope you find it useful. You can find more of our work here at, and you can follow us on Twitter @DynastyDVM and @JaseAbbey. We will do our best to be available for questions or feedback. Our DMs are open.

Aaron Maberry

I am a veterinarian who has been playing fantasy football off and on since high school. About 12 years ago, I got more competitive and serious about fantasy football when I started a league with some other friends who were in vet school with me at the time. I started playing IDP about 3 years ago and have become even more obsessed with fantasy football. I have what I would call an evidence-based approach to fantasy football and love to track data in spreadsheets. I began writing for IDP Guys in the summer of 2021 and look forward to contributing to the amazing team moving forward. Thanks for reading!
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