The TIB Efficiency Rating
Every EFF number on this site is the TIB Efficiency Rating — our own weighted formula, not the standard FIBA/NBA efficiency stat. Here is exactly how it works.
The classic efficiency formula treats every stat as equal: a rebound counts the same as a block, and a missed free throw costs the same as a missed three. We think that flattens what actually happens in a game. TIB EFF weighs each action by how hard it is to pull off — rare, high-impact plays earn more, and easy mistakes cost more.
The rating is computed per game: everything a player did well, minus everything that hurt the team, plus a bonus for the level of competition. Season and career numbers are simply the average of those per-game values.
Why these weights?
Rarer actions outweigh common ones. Blocks are the hardest and least frequent play in basketball, so they score highest — then steals, then assists, then rebounds and points, the easiest things to accumulate in a game.
The same logic applies to shooting, in both directions. A made free throw is the easiest shot in the game, so it earns the least. But missing it is punished hardest — harder than missing a two, which in turn costs more than missing a three. Failing at the easy thing is worse than failing at the hard thing.
The competition adjustment
The same stat line means something different in a top league than in a regional one, so each game also adds a fixed competition-strength value set per league. The BNXT League is the baseline (0); stronger leagues add points (top European leagues around +25) and weaker ones subtract a few. That is why a dominant game in a strong competition outranks the same box score posted a level below.
How it compares to other ratings
The widely used NBA efficiency stat (PTS + REB + AST + STL + BLK − missed shots − turnovers) and EuroLeague’s PIR both weigh every action equally and ignore wins, losses, and the level of competition. TIB EFF deliberately does not — winning matters (+5 per win, −5 per loss), and context matters.
Because of the weights, TIB EFF values run higher than the efficiency numbers you may know from other sites — a monster game can rate 60+. Only compare TIB EFF values with each other; they are not on the same scale as NBA EFF or PIR.