Fantasy strength of schedule estimates matchup difficulty. Learn how to use SOS for drafts, waivers and lineups without letting it override player role.

Questionable means an NFL player is uncertain to play—not automatically 50-50. Learn how Q, Doubtful and Out should change fantasy lineups and IR moves.

FLEX is a fantasy lineup slot for eligible skill players. Learn which positions qualify, the late-game swap rule, and how to choose an RB, WR or TE.

An empty formation puts the quarterback alone in the backfield and spreads five eligible receivers. Learn 3×2, 4×1, protection and defensive answers.

A bunch formation clusters three eligible receivers to create free releases and coverage conflicts. Learn bunch vs. stack, legal rubs and defensive answers.

IDP leagues replace or supplement team D/ST with individual defenders. Learn roster positions, scoring, draft strategy and the settings that change value.

The 2026 NFL roster-cut deadline is August 30 at 6 p.m. ET. Learn how the 53-man limit, waivers, practice squads and game-day rosters work.

A redraft league resets every roster after the season. Learn how it works, how to draft and how it differs from keeper and dynasty formats.

The pocket is the protected area around a passer. Learn how blockers form it, why quarterbacks step up and how it differs from the tackle box.

A fumble occurs when a player loses possession before the play is dead. Learn recovery, fourth-down, two-minute and end-zone rules.