alleygorithm
player impact + groups
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alleygorithm
player impact and winning groups

Player, pair, and lineup impact measured from every NBA possession.

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Pair•Current season•Through 2026-04-22
Victor Wembanyama
Stephon Castle
SAS logo

Victor Wembanyama + Stephon Castle

Over 100 shared possessions, this pair has added about +0.017 wins after shrinkage. That is 99th percentile on 5,239 shared possessions, which currently reads as a high confidence signal. This sample is sturdy enough to treat as a real rotation signal.

Rank #29|+0.9 est. wins|99th percentile|high confidence|5,239 poss
League percentile99.4th
0th (worst)25th50th (median)75th100th (best)
050100
Better than 99% of pairs. Rank #29 in this window, with 5,239 shared possessions and high confidence.
Est. wins added
+0.9
9999th percentile
Impact / 100
+0.017
9999th percentile
Off / Def
O+0.017D+0.020
Shape of value across both sides
Possessions
5,239
high confidence
Grade
99%
grade A+
What stands out
This sample is sturdy enough to treat as a real rotation signal.
The group has added +0.9 estimated wins in this window, which is easier to read than the per-100 rate on its own.
Off/Def shows whether that value is being created through scoring lift, defensive resistance, or a more balanced two-way profile.
Baseline check
The member average is +0.037, while the group's expected baseline is +0.019.
Advanced breakdown
Observed possessions5,239
Member average+0.037
Expected baseline+0.019
Actual group score+0.017
Surplus-0.002
Member profiles
Victor Wembanyama
SAS logo
SAS
+0.047
99th pctl
8,101 posshighOff +0.026 / Def +0.046
Stephon Castle
SAS logo
SAS
+0.028
93th pctl
8,951 posshighOff +0.011 / Def +0.036