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Performance indicators associated with match outcome within the United Rugby Championship
Journal article   Open access   Peer reviewed

Performance indicators associated with match outcome within the United Rugby Championship

Georgia A. Scott, Neil Bezodis, Mark Waldron, Mark Bennett, Simon Church, Liam P. Kilduff and M. Rowan Brown
Journal of Science and Medicine in Sport, Vol.26(1), pp.62-68
2023
DOI: https://doi.org/10.1016/j.jsams.2022.11.006
PMID: 36528551
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Published Version Open Access CC BY V4.0
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https://doi.org/10.1016/j.jsams.2022.11.006View
Published Version

Abstract

Decision modelling Game statistics Multivariate analysis Sports performance Team sports
Objectives: The aims of this study were to: i) identify performance indicators associated with match outcomes in the United Rugby Championship; ii) compare the efficacy of isolated and relative datasets to predict match outcome; and iii) investigate whether reduced statistical models can reproduce predictive accuracy. Design: Retrospective analysis of key performance indicators in the United Rugby Championship. Methods: Twenty-seven performance indicators were selected from 96 matches (2020–21 United Rugby Championship). Random forest classification was completed on isolated and relative datasets, using a binary match outcome (win/lose). Maximum relevance and minimum redundancy performance indicator selection was utilised to reduce models. In addition, models were tested on 53 matches from the 2021–22 season to ascertain prediction accuracy. Results: Within the 2020–21 datasets, the full models correctly classified 83% of match performances for the relative dataset and 64% for isolated data, the equivalent reduced models classified 85% and 66% respectively. The reduced relative model successfully predicted 90% of match performances in the 21–22 season, highlighting that five performance indicators were significant: kicks from hand, metres made, clean breaks, turnovers conceded and scrum penalties. Conclusions: Relative performance indicators were more effective in predicting match outcomes than isolated data. Reducing features used in random forest classification did not degrade prediction accuracy, whilst also simplifying interpretation for practitioners. Increased kicks from hand, metres made, and clean breaks compared to the opposition, as well as fewer scrum penalties and turnovers conceded were all indicators of winning match outcomes within the United Rugby Championship.

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