If you grew up on offense-only fantasy football, "IDP" can sound like a niche dynasty rule. It is not. Thousands of leagues start individual defensive players every week — and those players score real fantasy points, not participation trophies.
This post explains what IDP scoring is, how common tackle and sack systems work, why generic rankings fail IDP drafts, and where to go for an IDP-aware board.
What IDP means
IDP stands for individual defensive players. Instead of (or in addition to) starting a single "DST" team defense, you draft and start named defenders: linebackers, edge rushers / defensive linemen, and defensive backs.
Each defender scores on events they produce:
- Solo tackles and assisted tackles
- Sacks and tackles for loss
- Interceptions, forced fumbles, and fumble recoveries
- Pass breakups, safeties, and defensive touchdowns (league-dependent)
Offense still scores the usual yards, catches, and touchdowns. Defense is simply another set of positions on the same roster — and on the same draft board, if your rankings are honest.
How IDP scoring usually works
There is no single universal IDP rulebook, but most leagues cluster around a few patterns.
Tackle-heavy (common in MFL and many dynasty leagues)
- Solo tackle: 1.0–2.0 points (2.0 is a big swing)
- Assisted tackle: 0.5–1.0
- Sack: 3–6 (often 4–5)
- Tackle for loss: 1–4
- Interception / forced fumble / recovery: 2–6 each
Big-play IDP
- Lower tackle values, higher sack and turnover bonuses
- Edge rushers and ball-hawk DBs rise; pure tackle machines rise less
Hybrid / "light IDP"
- Half-point or fractional tackles so defense scores without dominating the top of the board
A worked example helps. In a league that pays 2 points per solo tackle, 1 per assist, 5 per sack, and solid TFL / turnover bonuses, an every-down linebacker with 100 solos, 60 assists, 10 TFLs, and a few sacks can clear 300 fantasy points. An elite wide receiver season in full PPR is often in a similar band — or lower. That is not a fluke week. That is a full-season scoring system where defense is a real position group.
When tackle points sit near 2.0, linebackers climb. High-volume MIKE and WILL linebackers become weekly starters with WR2-range ceilings. Edges still matter for sacks; DBs matter for splash plays and, in some systems, tackle volume too. The exact ranking order depends on your numbers — which is the whole point.
Why generic rankings fail IDP leagues
Consensus "fantasy football rankings" are usually built for offense-only, standard or half-PPR redraft. They either:
- Ignore defenders entirely, or
- Bolt on a late-round IDP afterthought that assumes light scoring and shallow benches
Neither matches a league that starts four to ten defenders and pays real tackle money. The failure modes are predictable:
- Board real estate is wrong. Every-down linebackers belong in the middle rounds (sometimes earlier), not as round-14 "IDP filler."
- Opportunity cost is wrong. Taking a mid-WR while a top-5 LB is available can cost you more points than the consensus sheet admits.
- Positional runs are invisible. IDP leagues have LB runs the same way superflex leagues have QB runs. If your sheet does not show LBs, you will miss the run and stream garbage.
- Format interactions compound. Stack IDP with superflex or TE premium and the board changes twice. An offense-only ADP list has no language for that.
We walked through a concrete version of this math in Why Generic Rankings Lose IDP Drafts — one real-style league, 2-point solos, a linebacker outscoring an elite WR season by rounds of value. The short version: if your rankings do not include your defensive scoring, you are drafting a different sport than your leaguemates who did the math.
Draft implications you can use this weekend
- Learn your tackle values first. 0.5 solo vs 2.0 solo is not a small tweak; it is a different IDP universe.
- Count starter slots. Starting 2 LBs is not the same as starting 4 LBs + 2 DL + 2 DB. Demand drives when the position run starts.
- Prefer every-down roles. Snap share and tackle opportunity beat "name brand pass rusher" when your league pays tackles.
- Do not wait for "IDP rounds" on an offense-only clock. If your board is correct, premium LBs go while offense still looks attractive on consensus sheets.
- Keep offense and defense on one ranked list. Separate "offense board" + "IDP board" is how people double-dip value and underrate cross-position trades in the draft room.
Where to rank IDP players
For a format page that puts defenders on the board the way tackle-heavy leagues price them, use IDP rankings. If you want a printable top-defenders view for draft day, grab the IDP cheat sheet.
Both only help if you understand why ranks move: replacement level and scoring. That method is value-based drafting — project events, convert to points with your rules, subtract replacement, rank the surplus. IDP is not a special snowflake outside VBD; it is VBD applied to tackles and sacks instead of only yards and catches.
Soft edge: your league's real defensive scoring
Illustrative 2-points-per-tackle boards teach the shape of IDP. Your league might pay 1.5 solos, stack sack bonuses, or start an odd DL/LB/DB mix. LeagueFrenzy connects to leagues like MFL and Sleeper, reads IDP scoring and defensive roster slots, and ranks defenders alongside offense on one board — so you are not maintaining a weekend spreadsheet every August.
IDP scoring is not exotic. It is points for plays defenders actually make. Draft it that way, and the "mystery" of IDP leagues mostly disappears.