This article has been accepted for publication and undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process, which may lead to differences between this version and the Version of Record. Please cite this article as doi: 10.1111/sms.13779 This article is protected by copyright. All rights reserved MR PETER TIERNEY (Orcid ID : 0000-0002-6216-9368) Article type : Original Article Title: The relationship between collision metrics from micro-sensor technology and video-coded events in rugby union Submission Type: Original Research Authors: Peter Tierney 1,2 , Catherine Blake 2 , Eamonn Delahunt 2,3 Author Affiliations: 1 The Football Association, Tatenhill, Burton upon Trent DE13 9RN, United Kingdom 2 School of Public Health, Physiotherapy and Sports Science, University College Dublin, Dublin, Ireland 3 Institute for Sport and Health, University College Dublin, Dublin, Ireland Corresponding Author Contact Details: Peter Tierney The Football Association, Tatenhill, Burton upon Trent DE13 9RN, United Kingdom EMAIL: peter_tierney@hotmail.com PHONE: 00 353 86 125 2277 Running Head: Collision detection in rugby union Text Word Count: 5187 words (including section titles, not including references). Abstract Word Count: 247 words. Tables / Figures: 4 tables, 4 figures. Accepted Article