Commissioner Injury Reserve Rules: How to Set Up IR Rules in Fantasy Football
How to define IR eligibility: the commissioner must define which NFL injury designations make a player eligible for the fantasy IR slot. The most common eligibility standard: a player must have an official NFL injury designation of IR (placed on the NFL’s actual injured reserve list), PUP (physically unable to perform), or NFI (non-football injury) to be placed in the fantasy IR slot. Some leagues also allow players with an “Out” game-day designation to be placed in IR temporarily for that week. The tighter the eligibility standard, the less the IR slot can be exploited as a free extra roster spot; the more permissive the standard, the more flexibility managers have during a season.
IR Rules Quick Reference
| IR scenario | Recommended rule | How to enforce | Mistake to avoid |
|---|---|---|---|
| IR eligibility standard | Official NFL IR list + PUP + NFI only | Verify eligibility against the official NFL transaction wire, not self-reported injury news | “Out this week” as IR-eligible — a game-week inactive is not the same as official NFL IR placement |
| Player activated off NFL IR | Require fantasy IR move-off within 48–72 hours of NFL activation | Monitor NFL transaction feed; notify the manager immediately when their player is activated | No activation deadline — managers leave recovered healthy players in IR indefinitely as free roster spots |
| IR slot count (redraft) | 1–2 IR slots per team | Set in platform settings before the season | Zero IR slots — managers must drop injured players who will return, damaging roster quality unfairly |
| IR slot count (dynasty) | 2–3 IR slots per team | Larger dynasty rosters need more IR coverage for longer-term injuries | 5+ IR slots — effectively supersizes the roster through mass injury stashing |
| Temporary roster expansion during IR | Optional — 1 extra roster spot per IR player | Provides flexibility but requires commissioner tracking to ensure spot is removed when player activates | Adding expansion spots with no tracking — managers hold the extra spot permanently after the injured player returns |
| IR abuse (ineligible player stashed) | Audit IR periodically; require immediate correction | Check IR placement against NFL injury report after each waiver period | Ignoring suspected IR abuse until a manager complains — proactive auditing is faster and less contentious |
IR Activation and Replacement Rules
How to handle IR activation when a player returns from injury. The most common IR rule dispute: a manager’s player recovers from injury and is activated off the NFL’s injured reserve list, but the manager does not want to bring him back to the active roster because they prefer to keep their current roster construction. The commissioner must have a policy on this scenario before it happens. Standard approaches: (1) require the manager to activate the player within 48–72 hours of the NFL’s IR activation (or waive the player), preventing permanent stashing; or (2) allow managers to leave the player in the IR slot indefinitely even if he has returned from injury, treating the slot as a waiver-exempt stash. Option 1 is more competitive; option 2 gives managers more strategic flexibility.
Adding replacement roster spots during injuries. Some leagues allow a temporary “injured list” roster expansion — adding an extra roster spot for the duration of a player’s IR placement so that the active roster size remains constant even while a player is in the IR slot. This is a more forgiving structure that prevents managers from feeling punished for having an injured player, but requires more commissioner tracking to ensure the expansion spots are removed when players are activated or released.
Commissioner Enforcement of IR Rules
How to handle IR abuse. The most common form of IR abuse: a manager places a player in the IR slot who does not meet the eligibility criteria (for example, placing a player with a questionable or doubtful designation — not officially on NFL IR — in the fantasy IR slot to free up an active roster spot). The commissioner should audit IR slot usage periodically (especially early in the season when managers are still learning the rules) and require immediate correction of any ineligible IR placements. Consistent enforcement of IR eligibility standards prevents the IR slot from functioning as a free extra roster spot for healthy or slightly-injured players.
For how IR rules connect to the full commissioner role, see: Commissioner Fantasy Football Tips: How to Be a Good Fantasy Football Commissioner.