Home-Court Advantage and Home Win Percentage in the NBA: An In-Depth Investigation by Conference and Team Ability

The National Basketball Association (NBA) is the major professional basketball league in the United States. Home-court advantage (HA) and home win percentage (HW) have been identified as decisive factors in determining the final outcome of a game. This study analyzes a total of 24 regular seasons, w...

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Main Authors: Adrián López-García, Enrique Alonso-Pérez-Chao, Rafael M. Navarro Barragán, Sergio L. Jiménez-Sáiz
Format: Article
Language:English
Published: MDPI AG 2024-11-01
Series:Applied Sciences
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Online Access:https://www.mdpi.com/2076-3417/14/21/9989
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author Adrián López-García
Enrique Alonso-Pérez-Chao
Rafael M. Navarro Barragán
Sergio L. Jiménez-Sáiz
author_facet Adrián López-García
Enrique Alonso-Pérez-Chao
Rafael M. Navarro Barragán
Sergio L. Jiménez-Sáiz
author_sort Adrián López-García
collection DOAJ
description The National Basketball Association (NBA) is the major professional basketball league in the United States. Home-court advantage (HA) and home win percentage (HW) have been identified as decisive factors in determining the final outcome of a game. This study analyzes a total of 24 regular seasons, with two main objectives: (i) comparing HA and HW within the two conferences and (ii) examining the influence of team ability on HA and HW. HA (%) was calculated as (total home wins/total wins) × 100, and HW (%) as (total home wins/total home games) × 100. Teams were categorized into four different groups based on their season win percentage using cluster analyses. Regarding the first aim, we used an Independent Samples T-test and Mann–Whitney to assess differences between conferences. Subsequently, we evaluated the second objective using one-way ANOVA or Kruskal–Wallis. The results indicated no significant differences in HA within conferences. However, Western teams tended to have a higher HW than Eastern teams. The analyses revealed significantly higher HA in contender teams compared to the rest of the team abilities (<i>p</i> < 0.001). High–medium-ability teams also showed a significantly higher HA (<i>p</i> < 0.001) compared to low-ability teams. However, non-significant differences were found between the remaining groups for HA. Regarding HW, we observed significantly higher values in the contender teams compared to the teams with other ability levels (<i>p</i> < 0.001). Additionally, the high–medium-ability teams also exhibited significantly higher HW values (<i>p</i> < 0.001) when compared to the medium–low- and low-ability teams. Furthermore, the medium–low-ability teams showed significantly higher HW values (<i>p</i> < 0.001) when compared to the low-ability teams. Those findings suggest that team ability influences HA and HW in the NBA, where contender teams have significantly higher HW and HA values compared to the teams with other team ability levels. Understanding these dynamics provides valuable insights for team strategies, particularly during playoff stages where home-court advantage can be critical for success.
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spelling doaj-art-3ee8a2d1c34347e184d7701efa69465d2025-08-20T02:13:16ZengMDPI AGApplied Sciences2076-34172024-11-011421998910.3390/app14219989Home-Court Advantage and Home Win Percentage in the NBA: An In-Depth Investigation by Conference and Team AbilityAdrián López-García0Enrique Alonso-Pérez-Chao1Rafael M. Navarro Barragán2Sergio L. Jiménez-Sáiz3Sport Sciences Research Centre, Universidad Rey Juan Carlos, 28942 Madrid, SpainFaculty of Sports Sciences, Universidad Alfonso X el Sabio, 28691 Villanueva de la Cañada, SpainFaculty of Sports Science, European University of Madrid, 28670 Villaviciosa de Odón, SpainSport Sciences Research Centre, Universidad Rey Juan Carlos, 28942 Madrid, SpainThe National Basketball Association (NBA) is the major professional basketball league in the United States. Home-court advantage (HA) and home win percentage (HW) have been identified as decisive factors in determining the final outcome of a game. This study analyzes a total of 24 regular seasons, with two main objectives: (i) comparing HA and HW within the two conferences and (ii) examining the influence of team ability on HA and HW. HA (%) was calculated as (total home wins/total wins) × 100, and HW (%) as (total home wins/total home games) × 100. Teams were categorized into four different groups based on their season win percentage using cluster analyses. Regarding the first aim, we used an Independent Samples T-test and Mann–Whitney to assess differences between conferences. Subsequently, we evaluated the second objective using one-way ANOVA or Kruskal–Wallis. The results indicated no significant differences in HA within conferences. However, Western teams tended to have a higher HW than Eastern teams. The analyses revealed significantly higher HA in contender teams compared to the rest of the team abilities (<i>p</i> < 0.001). High–medium-ability teams also showed a significantly higher HA (<i>p</i> < 0.001) compared to low-ability teams. However, non-significant differences were found between the remaining groups for HA. Regarding HW, we observed significantly higher values in the contender teams compared to the teams with other ability levels (<i>p</i> < 0.001). Additionally, the high–medium-ability teams also exhibited significantly higher HW values (<i>p</i> < 0.001) when compared to the medium–low- and low-ability teams. Furthermore, the medium–low-ability teams showed significantly higher HW values (<i>p</i> < 0.001) when compared to the low-ability teams. Those findings suggest that team ability influences HA and HW in the NBA, where contender teams have significantly higher HW and HA values compared to the teams with other team ability levels. Understanding these dynamics provides valuable insights for team strategies, particularly during playoff stages where home-court advantage can be critical for success.https://www.mdpi.com/2076-3417/14/21/9989performance analysisgame locationteam sportbasketball
spellingShingle Adrián López-García
Enrique Alonso-Pérez-Chao
Rafael M. Navarro Barragán
Sergio L. Jiménez-Sáiz
Home-Court Advantage and Home Win Percentage in the NBA: An In-Depth Investigation by Conference and Team Ability
Applied Sciences
performance analysis
game location
team sport
basketball
title Home-Court Advantage and Home Win Percentage in the NBA: An In-Depth Investigation by Conference and Team Ability
title_full Home-Court Advantage and Home Win Percentage in the NBA: An In-Depth Investigation by Conference and Team Ability
title_fullStr Home-Court Advantage and Home Win Percentage in the NBA: An In-Depth Investigation by Conference and Team Ability
title_full_unstemmed Home-Court Advantage and Home Win Percentage in the NBA: An In-Depth Investigation by Conference and Team Ability
title_short Home-Court Advantage and Home Win Percentage in the NBA: An In-Depth Investigation by Conference and Team Ability
title_sort home court advantage and home win percentage in the nba an in depth investigation by conference and team ability
topic performance analysis
game location
team sport
basketball
url https://www.mdpi.com/2076-3417/14/21/9989
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AT enriquealonsoperezchao homecourtadvantageandhomewinpercentageinthenbaanindepthinvestigationbyconferenceandteamability
AT rafaelmnavarrobarragan homecourtadvantageandhomewinpercentageinthenbaanindepthinvestigationbyconferenceandteamability
AT sergioljimenezsaiz homecourtadvantageandhomewinpercentageinthenbaanindepthinvestigationbyconferenceandteamability