About 432.7 attempts before EuroLeague shot-making is half reliable, and not reached before it reaches 0.7. Shot selection settles far earlier, at 10 attempts for 0.5 and 10 attempts for 0.7. Selection is a property of where a player shoots from, which stabilises quickly; making is whether the ball went in, which does not.
| Attempts | Selection reliability | Shot-making reliability |
|---|---|---|
| 10 | 0.754 | 0.051 |
| 20 | 0.853 | 0.099 |
| 30 | 0.896 | 0.172 |
| 50 | 0.929 | 0.248 |
| 100 | 0.958 | 0.276 |
| 200 | 0.978 | 0.404 |
| 400 | 0.989 | 0.484 |
| 800 | 0.988 | 0.677 |
The observable ceiling on this population is 800 attempts, where selection reads 0.988 and making 0.677. These thresholds are a property of each league's own talent dispersion, not constants, which is why they differ across the 9 leagues tested.
In the EuroLeague, corner threes convert at 42.00% against 35.83% above the break, a gap of 6.17 percentage points. A distance-only model already predicts 4.62 of that, leaving a residual of 1.55 points (SE 0.50), which is distinguishable from zero. The corner effect is mostly the shorter shot, and the model prices it already.
Full NBA feed to hand-logged scoresheet costs 0.020 log loss and 0.024 AUC, and IMPROVES calibration (ECE 0.0122 -> 0.0025). Measured across 4 grades of feed on one fixed subsample of 250,000 shots; the full table is on the page.
No per-shot defender distance, touch time or pose. Predictive validity is untested and untestable with the data available, so no claim is made about forecasting development.
Over Expected is a basketball shot-value platform covering NBA, EuroLeague, EuroCup, Liga ACB, Lega Basket Serie A, Basketball Bundesliga, Greek Basket League, ABA Liga, WNBA.