How strong was he while he played?
A 0–100 score compared only with players from the same NBA season.
Last updated Jul 22, 2026
How the rankings work
How hussEyquation ranks NBA players
hussEyquation estimates how much a player helped, then turns that estimate into season, career, and team rankings. Here is the method in plain English.
76 NBA seasons450 minutes before an official rank0–100 season scale2026–27 rules locked in advance
The short version
What each ranking answers
How much did he contribute all year?
Impact plus total workload. Playing more matters here.
How high—and how often—did he rank?
Peak seasons, five-year prime, ten-year staying power, and repeat No. 1 finishes.
How strong was the whole roster?
Every player's contribution, weighted by how much he played for that team.
01 · Player seasons
How Impact Rate is built
Impact Rate is about level of play, not total games played.
- 1
What the player did
The model uses scoring and shooting, passing, rebounds, steals, blocks, turnovers, fouls, and minutes. It accounts for position, role, and how fast the player's team played.
- 2
How small samples are handled
A hot stretch can make a short-season player look better than he really is. Below 450 minutes, the estimate is pulled toward a more ordinary level and the player does not receive an official rank.
- 3
How on-court results are used
The model looks at how the team performed during the player's lineups and tries to separate his effect from his teammates. Several seasons are used to make that check steadier, and it is allowed to change the box-score estimate only a little.
Maximum effect: the on-court check can move the estimate by no more than 0.75 impact points in either direction.
- 4
How shorter nightly roles affect the score
Players at 30 or more minutes per game keep full credit. Below 30, the part of the score above 25 is reduced gradually. The largest reduction is 20% at 12 minutes per game or less. The rankings also include a switch that removes this adjustment.
Example: at the maximum reduction, a score of 85 becomes 73 because only the 60 points above the 25-point floor are reduced by 20%.
- 5
How players are compared within a season
The final result is placed on a 0–100 scale. A score of 100 means the best result in that season—not automatically the greatest season ever.
02 · Full-season contribution
How Season Value is different
Impact Rate measures how effective a player was while he was on the court. Season Value adds how much he played over the full regular season.
Season Value starts with the player's impact above a reference line set near the lower end of established rotation players. It then counts how many possessions he played over the full regular season.
That means an excellent player in limited minutes can lead in Impact Rate but finish much lower in Season Value. A durable star can rank higher in Season Value because he sustained strong play over a much larger workload.
Example: at the same impact level, 2,000 possessions create twice as much Season Value as 1,000 possessions.
No double penalty.
The minutes-per-game adjustment used by Impact Rate is not applied again. Season Value already accounts for playing time through the player's actual workload.
03 · All-time careers
How the career ranking works
The career list rewards peak, prime, staying power, and repeated domination.
- 1
Rank every season
Each qualified season receives a league finish: first, second, third, and so on.
- 2
Use three views of the career
The model averages the player's best three finishes, best five finishes, and best ten finishes. Those three averages count equally.
- 3
How shorter careers stay eligible
If a player has fewer than ten qualified seasons, each missing season counts as a 25th-place finish. Short careers stay eligible, but missing years are not treated like elite years.
- 4
How repeated No. 1 seasons count
Each first-place season improves the score by one quarter of a point, up to one point total. The full bonus arrives only after a player builds a long enough career.
Example: with 12 or more qualified seasons, three No. 1 finishes improve the career score by 0.75 points.
Lower is better on the career list.
The score is an average league finish, so a 2.8 is stronger than a 6.4. If two players tie, the model first favors more No. 1 seasons, then larger gaps over the league, more top-five seasons, and finally more total season value.
04 · NBA history
How older players are handled
The farther back the season, the less the NBA recorded.
The archive begins in 1950–51. Complete modern box-score inputs begin in 1973–74. For earlier seasons, hussEyquation estimates missing pieces from the statistics and team information that still exist.
Defense is especially difficult. For seasons without modern lineup data, the model adds a small, limited Historical Defense Estimate based on the defensive information available for the player and his team. Every season that uses an estimate is labeled.
These are informed estimates, not recovered facts. Older players therefore receive wider possible rank ranges. Most importantly, every player is judged against the league he actually played in.
Maximum effect: the Historical Defense Estimate can move a season by no more than one internal impact point in either direction.
05 · Teams
How the team rankings work
Add the roster together, then compare it with what happened on the court.
Each player's season impact is weighted by how many possessions he played for that team. If a player was traded, his minutes are split between the teams that actually received them.
Roster Impact shows the average quality of the roster's minutes. Total Roster Value shows the full amount delivered over the schedule.
The result is compared afterward with the standings and each team's point differential. Wins are not added to the formula just to make the ranking match the standings.
What the ranking does not claim
Important limits
Playoffs, championships, awards, and reputation do not add points.
Shot difficulty, defensive attention, off-ball movement, and every tactical detail are not directly recorded.
The model cannot recreate possessions that were never tracked.
Players who share most of their minutes can still be difficult to separate.
The rankings describe what happened. They do not predict next season.
The same rules apply to every player, even when one result feels surprising.
How changes are handled
The rules are locked before the games
The current system is frozen through the 2026–27 season. It will be updated with new games, but the formula will not be changed midseason to move a particular player up or down. After the season, the results can be tested and any proposed improvement must be judged across the full league.