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Exploring the relationship between basketball rotation and competitive performance using substitution network

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  • 1School of Competitive Sports, Beijing Sport University, Beijing, PRC.

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This study reveals that team substitution network structures significantly correlate with NBA playoff success. Key player metrics like defensive win share and assists are crucial for team performance and optimizing player rotations.

Keywords:
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Area of Science:

  • Sports Analytics
  • Network Science
  • Basketball Performance Analysis

Background:

  • Understanding team dynamics and player interactions is crucial for competitive success in professional basketball.
  • Substitution patterns and player roles significantly influence team performance, yet their quantitative impact remains underexplored.

Purpose of the Study:

  • To investigate the relationship between substitution network (Sub-N) parameters and NBA team standings.
  • To identify key individual performance indicators differentiating player substitution groups and their association with team success.

Main Methods:

  • Analysis of 574,214 substitution events across 10 NBA seasons to construct team-specific Sub-N.
  • Clustering players based on playing time, clustering coefficient, and vulnerability to form distinct groups.
  • Correlation and regression analyses to assess the impact of Sub-N parameters and individual performance metrics on team standing.

Main Results:

  • Team clustering coefficient, vulnerability standard deviation, and starter out-degree centrality showed moderate to strong correlations with playoff standings (r=0.54-0.76).
  • Defensive win share, turnovers, and assists were predictive of player net ratings, with higher scores for role players who scored more points.
  • Players on top playoff teams exhibited lower absolute vulnerability values (r=0.80).

Conclusions:

  • Substitution network analysis is a feasible method for linking team rotation strategies to competitive performance.
  • Findings offer quantitative insights for coaching staff to optimize substitution patterns, player roles, and overall roster construction for improved team success.