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Despite the growing application of machine learning for injury risk analysis in sport, its use in rugby union has been primarily confined to single-team and single-season study cohorts. The aim of this study was to evaluate the performance of machine learning-based injury risk prediction models in elite male rugby union and to interpret their potential applicability in professional sporting environments.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Multi-season data (2021\/22\u20132023\/24) relating to 129 professional male rugby union players from the four Irish provincial teams (Connacht Rugby, Leinster Rugby, Munster Rugby and Ulster Rugby), along with the Ireland men\u2019s national team, were included in the analyses. External workload data from Global Navigation Satellite System (GNSS) units, self-perceived wellness scores, and musculoskeletal screening measures were modelled using logistic regression, Support Vector Machine (SVM), Random Forest, Extreme Gradient Boosting (XGBoost), and Categorical Boosting (CatBoost). \u2018Injury\u2019 was defined as a non-contact, soft-tissue injury to the lower limb, with incidents logged by team medical staff in a centralised athlete management system.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>CatBoost achieved the highest values of area under the receiver operating characteristic curve (ROC AUC\u2009=\u20090.66), area under the precision-recall curve (AUPRC\u2009=\u20090.008, prevalence\u2009=\u20090.0039), and precision (0.013).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>Predictive performance across the models was poor, with low precision scores highlighting each model\u2019s inability to effectively identify impending injuries. The resulting high false-positive rate (1 correct prediction for every 77 false predictions) underscores the limited applicability of the tested machine learning approaches within the modelling framework analysed in this study.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1186\/s40798-026-01060-7","type":"journal-article","created":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T14:45:34Z","timestamp":1787755534000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Machine Learning Model Development and Evaluation for Non-contact Lower Limb Injury Risk Prediction in Elite Male Rugby Union: A Multi-team, Multi-season Analysis"],"prefix":"10.1186","volume":"12","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5614-3252","authenticated-orcid":false,"given":"Chris","family":"Leckey","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0724-5997","authenticated-orcid":false,"given":"Nicol","family":"van Dyk","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0009-3875-3853","authenticated-orcid":false,"given":"Jakim","family":"Berndsen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5284-856X","authenticated-orcid":false,"given":"Cailbhe","family":"Doherty","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6160-4639","authenticated-orcid":false,"given":"Aonghus","family":"Lawlor","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5449-5932","authenticated-orcid":false,"given":"Eamonn","family":"Delahunt","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2026,8,26]]},"reference":[{"issue":"3","key":"1060_CR1","doi-asserted-by":"publisher","first-page":"229","DOI":"10.1080\/02640414.2012.727456","volume":"31","author":"N Cahill","year":"2013","unstructured":"Cahill N, Lamb K, Worsfold P, et al. 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