Variables Involved in Ball Possession in Rugby: A Systematic Review

Abstract

The aim of this article was to identify game variables related to ball possession in top-level rugby teams. Using a systematic review, the scientific literature on studies published between 2001 and 2021 analysing ball possession in the context of rugby in professional leagues was examined, identifying outcome variables and patterns of play. A search of specialised databases was carried out: PubMed, Scopus, SportDiscus and Web of Science, and a total of 176 articles were found. Each study was analysed by two reviewers independently; and in the event of discrepancy, a third reviewer decided on its inclusion. Ultimately, 16 studies met the inclusion criteria. The review identified three variables related to ball possession outcome: (a) field location and initial possession action, (b) ruck characteristics, and (c) line breaks. The results demonstrate interdependence in the different studies on ball possession. These variables are considered to be responsible for the continuity of offensive play and may be predictors of the final outcome of possession.