Every league has an argument about whether fantasy football is skill or luck. It is both, and the useful question is not which — it is how much of a particular season was which. That is measurable.
1. All-play record
How you would have done against every team every week. It strips out the schedule entirely, and it is the single most honest number about a season. A 10-4 team with a .480 all-play record did not have a great year; it had a great schedule.
2. Luck differential
Real win percentage minus all-play win percentage. Positive means the schedule helped, negative means it hurt. Across a single season this swings hugely; across five it is close to zero for almost everyone, which is itself the point — schedule luck evens out, and what remains is scoring.
3. Lineup efficiency
Points scored as a share of the maximum your roster could have scored with perfect hindsight. Nobody achieves 100% — that would require knowing the future — but the gap between managers is real and persistent, and it is one of the few places weekly decisions clearly show up.
scored 1,612.4 max possible 1,933.7 efficiency 83.4%
4. Points against
Pure luck, with no skill component whatsoever. You do not choose your opponents or their scores. A season with high points against was harder than the record suggests, and it says nothing at all about the manager.
Putting it together
- High all-play, low luck, high efficiency: genuinely good. The record understates it if anything.
- Average all-play, high luck: a fortunate year. Enjoy the trophy; expect regression.
- High all-play, negative luck, bad record: the most frustrating season in fantasy, and the best team nobody remembers.
- Low efficiency with good scoring: the roster is better than the manager. That one is fixable.
One season of any of these is noise. They become meaningful across several years, which is exactly why a league's all-time record book is more interesting than any single standings page.