Importance of linebreaks in rugby union: The case of a winning team

The evolving landscape of rugby union, driven by rule changes that promote faster and more dynamic gameplay, has altered the significance of performance indicators (KPIs) in evaluating team success. In this study, we analyze 34 rugby games from the 2018/2019 season, focusing on a consistently successful team, to examine the impact of linebreaks as a critical KPI in modern rugby. We differentiate across dynamic linebreaks, occurring in open and unstructured phases of play, and static linebreaks, which emerge from set pieces like scrums and lineouts. Using detailed match data and video analysis, we found that dynamic linebreaks significantly contributed to larger score differences between opposing teams, regardless of match location, highlighting their impact on the team’s victories. Conversely, static linebreaks proved more effective during home games, indicating a potential advantage in executing structured plays in familiar settings. These findings emphasize the importance of dynamic play in modern rugby and offer practical insights for coaches and performance analysts to refine strategies that maximize offensive opportunities. By focusing on dynamic phases, teams can enhance their chances of success in all match environments, providing a strategic edge in professional rugby.