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Given the dynamic, open nature of tackling, characteristics influencing tackle outcome likely encompass complex networks of dependencies. This study aims to identify important classifying characteristics of the tackle related to ball carrier injurious and non\u2010injurious events in rugby league and identify the characteristics capability to correctly classify those events. Forty\u2010one ball carrier injuries were identified and 205\u00a0matched non\u2010injurious tackles were identified as controls. Each case and control were analysed retrospectively through video analysis. Random forest models were built to (1) filter tackle characteristics possessing relative importance for classifying tackles resulting in injurious\/non\u2010injurious outcomes and (2) determine sensitivity and specificity of tackle characteristics to classify injurious and non\u2010injurious events. Six characteristics were identified to possess relative importance to classify injurious tackles. This included \u2018tackler twisted ball carrier's legs when legs were planted on ground\u2019, \u2018the tackler and ball carrier collide heads\u2019, \u2018the tackler used body weight to tackle ball carrier\u2019, \u2018the tackler has obvious control of the ball carrier\u2019 \u2018the tackler was approaching tackle sub\u2010maximally\u2019 and \u2018tackler's arms were below shoulder level, elbows were flexed\u2019. The study identified tackle characteristics that can be modified in attempt to reduce injury. Additional injury data are needed to establish relationship networks of characteristics and analyse specific injuries. Sensitivity and specificity results of the random forest were 0.995 and 0.525.<\/jats:p>","DOI":"10.1080\/17461391.2020.1853817","type":"journal-article","created":{"date-parts":[[2020,11,19]],"date-time":"2020-11-19T11:28:18Z","timestamp":1605785298000},"page":"269-278","update-policy":"https:\/\/doi.org\/10.1080\/tandf_crossmark_01","source":"Crossref","is-referenced-by-count":13,"title":["Rugby league ball carrier injuries: The relative importance of tackle characteristics during the European Super League"],"prefix":"10.1002","volume":"22","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6932-4079","authenticated-orcid":false,"given":"M.","family":"Hopkinson","sequence":"first","affiliation":[{"name":"Carnegie Applied Rugby Research (CARR) Centre Carnegie School of Sport Leeds Beckett University Leeds UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9559-0562","authenticated-orcid":false,"given":"G.","family":"Nicholson","sequence":"additional","affiliation":[{"name":"Carnegie Applied Rugby Research (CARR) Centre Carnegie School of Sport Leeds Beckett University Leeds UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4348-9681","authenticated-orcid":false,"given":"D.","family":"Weaving","sequence":"additional","affiliation":[{"name":"Carnegie Applied Rugby Research (CARR) Centre Carnegie School of Sport Leeds Beckett University Leeds UK"},{"name":"Leeds Rhinos Rugby League Club Leeds UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3416-6266","authenticated-orcid":false,"given":"S.","family":"Hendricks","sequence":"additional","affiliation":[{"name":"Carnegie Applied Rugby Research (CARR) Centre Carnegie School of Sport Leeds Beckett University Leeds UK"},{"name":"Division of Exercise Science and Sports Medicine Department of Human Biology Faculty of Health Sciences University of Cape Town and the Sports Science Institute of South Africa Cape Town South Africa"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4200-2886","authenticated-orcid":false,"given":"A.","family":"Fitzpatrick","sequence":"additional","affiliation":[{"name":"Faculty of Health The University of Bolton Bolton UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7340-8109","authenticated-orcid":false,"given":"A.","family":"Naylor","sequence":"additional","affiliation":[{"name":"Faculty of Health The University of Bolton Bolton UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6186-8466","authenticated-orcid":false,"given":"C.","family":"Robertson","sequence":"additional","affiliation":[{"name":"Faculty of Health The University of Bolton Bolton UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6460-9937","authenticated-orcid":false,"given":"C.","family":"Beggs","sequence":"additional","affiliation":[{"name":"Carnegie Applied Rugby Research (CARR) Centre Carnegie School of Sport Leeds Beckett University Leeds UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4274-6236","authenticated-orcid":false,"given":"B.","family":"Jones","sequence":"additional","affiliation":[{"name":"Carnegie Applied Rugby Research (CARR) Centre Carnegie School of Sport Leeds Beckett University Leeds UK"},{"name":"Leeds Rhinos Rugby League Club Leeds UK"},{"name":"England Performance Unit The Rugby Football League Leeds UK"},{"name":"School of Science and Technology University of New England Armidale Australia"},{"name":"Division of Exercise Science and Sports Medicine Department of Human Biology Faculty of Health Sciences University of Cape Town and the Sports Science Institute of South Africa Cape Town South Africa"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2021,1,11]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"crossref","unstructured":"Akobeng A. 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