10 Common Fantasy Football Start/Sit Mistakes and How to Avoid Them

Stop making the same fantasy football lineup mistakes. Learn top fantasy football start/sit errors managers make and how data and tools can help you avoid them.
10 Common Fantasy Football Start/Sit Mistakes and How to Avoid Them
LAST DAY

Get 20% OFF

To celebrate the start of the NBA season, we're giving away 20% off all subscriptions. ENDS TODAY. Use promo code BASKET
PROMO CODE BASKET

Every fantasy manager has benched a player who went off for 25 points or went with a "must-start" name who disappeared in a bad matchup. These types of fantasy football start/sit mistakes can cost you crucial wins, but the good news is they're completely avoidable, especially if you use a fantasy football start sit tool.

Understanding where managers go wrong and how to fix it is the key to consistent success. Let's break down the 10 most common fantasy football lineup mistakes and show you how to make smarter, data-driven decisions every week.

10 Fantasy Football Start/Sit Mistakes to Avoid

1. Trusting Names Over Numbers

Big names don't always deliver big points, and it can be really hard to bench one of your top picks in the draft even if the fantasy football rankings indicate you should. Managers often start players based on reputation instead of recent performance or usage. Fantasy is about production, not popularity.

2. Overreacting to One Good (or Bad) Week

A player's blow-up week doesn't guarantee future success. Instinctively, we know that. Likewise, a slow game doesn't mean they're droppable. Look at trends over multiple weeks before making lineup changes.

3. Ignoring Matchups

Even elite players and first-round picks can struggle against tough defenses. Matchups matter, even more so when deciding between mid-tier options. Checking defensive rankings can reveal hidden value, and using an NFL lineup optimizer can reveal opportunities you might be missing.

4. Forgetting About Game Script

If a team is likely to trail early, expect more passing and fewer carries. Understanding game flow can give you an edge when making close call on which players to start and sit.

5. Starting Injured or Questionable Players

Hoping your player "guts it out" is risky. Always confirm active status before kickoff and have a backup plan ready. You don't want to be shopping the NFL waiver wire 10 minutes before kickoff and be backed into a bad pickup.

6. Ignoring Weather and Field Conditions

Rain, wind or snow can turn a shootout into a slog. Always factor in NFL weather for kickers and quarterbacks, especially in late-season matchups. Fantasy football projections you look at early in the week won't look the same if the weather forecast changes.

7. Ignoring Usage Trends

Snap counts, targets and red-zone touches reveal more than box scores. A player with increasing involvement is often a better play than a fading veteran. You have to do your homework if you want to win your league.

8. Falling for the "Boom or Bust" Trap

High-upside players are exciting, but consistency really is what wins leagues over the long haul. Use boom-or-bust options sparingly, typically in the flex or in overall matchups where you are a big underdog.

9. Forgetting Bye Weeks and Roster Depth

A careless oversight can lead to an empty roster slot or a scramble at the last minute. Plan your lineup a week ahead to avoid last-minute scrambles.

10. Not Using Available Tools

You don't need to rely on gut feelings alone. Using a fantasy football sit/start tool like the one at RotoWire along with a player projection system and a lineup optimizer can help you make objective, data-backed decisions every week.

Avoid the Avoidable NFL Fantasy Start/Sit Mistakes

The best way to eliminate lineup errors is to replace emotion with information, and subscribing to RotoWire is a good place to start. Review matchup data, monitor injury reports and check projections before locking in your lineup. Use analytics-driven tools to compare player outlooks and avoid personal bias, and avail yourself of the industry-leading analysis found at RotoWire.

Fantasy football isn't about predicting the future;  it's about improving your odds and avoiding avoidable errors. By steering clear of these fantasy football start/sit mistakes, you can turn weekly lineup stress into strategic confidence.

ABOUT THE AUTHOR
KC Joyner is one of the pioneers of the football analytics movement. He was a Senior Writer for ESPN, covering fantasy football, the NFL, college football, and the NFL draft for 14 years. He has also penned material for The Athletic, The New York Times and The Philadelphia Inquirer. KC's Scientific Football book series broke new ground in the football analytics world and was purchased by nearly half of NFL teams.
RotoWire Logo

Continue the Conversation

Join the RotoWire Discord group to hear from our experts and other NFL fans.

Top News

Tools

NFL Draft Kit Logo

NFL Draft Kit

Fantasy Tools

Don’t miss a beat. Check out our 2025 NFL Fantasy Football rankings.