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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WPA-powered analytics from play-by-play data
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Pair•Current season•Through 2026-04-22
Duncan Robinson
Tobias Harris
DET logo

Duncan Robinson + Tobias Harris

Over 100 shared possessions, this pair has added about +0.016 wins after shrinkage. That is 99th percentile on 5,209 shared possessions, which currently reads as a high confidence signal. This sample is sturdy enough to treat as a real rotation signal.

Rank #34|+0.8 est. wins|99th percentile|high confidence|5,209 poss
League percentile99.3th
0th (worst)25th50th (median)75th100th (best)
050100
Better than 99% of pairs. Rank #34 in this window, with 5,209 shared possessions and high confidence.
Est. wins added
+0.8
9999th percentile
Impact / 100
+0.016
9999th percentile
Off / Def
O+0.020D+0.017
Shape of value across both sides
Possessions
5,209
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 +0.8 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 +0.023, while the group's expected baseline is +0.011.
Advanced breakdown
Observed possessions5,209
Member average+0.023
Expected baseline+0.011
Actual group score+0.016
Surplus+0.005
Member profiles
Duncan Robinson
DET logo
DET
+0.027
93th pctl
8,936 posshighOff +0.023 / Def +0.029
Tobias Harris
DET logo
DET
+0.019
87th pctl
7,385 posshighOff +0.014 / Def +0.024