K-D use in professional football

Is the K-D a useful diagnostic tool in adult professional sports?  How are test findings best used in clinical situations?  Read the recent publication from Martin Mrazik, Ph.D. and his colleagues: https://www.liebertpub.com/doi/pdf/10.1089/neu.2017.5490 Dhiren Naidu et al. Sideline Concussion Assessment: The King-Devick Test in Canadian Professional Football, Journal of Neurotrauma (2018). DOI: 10.1089/neu.2017.5490