Hughes, M., Caudrelier, T., James, N., Donnelly, I., Kirkbride, A. and Duschesne, C. 2012. Moneyball and soccer: An analysis of the key performance indicators of elite male soccer players by position. Journal of Human Sport and Exercise. 7, 2 (Jun. 2012), 402–412. DOI:https://doi.org/10.4100/jhse.2012.72.06.