Stephen Dank is an Australian biochemist who worked as a sports scientist with National Rugby League clubs such as the Manly Sea Eagles and Australian rules football clubs such as Essendon. He is known for his unorthodox treatment and diagnostic methods, including using calf blood and profiling players DNA. Des Hasler described Dank as 'a great analytical thinker', in particular highlighting his contributions in the area of GPS application, statistical science, and altitude simulation training. In February 2013, Essendon announced that they had asked the Australian Sports Anti-Doping Authority to investigate the supplements program that Dank had overseen at their club during the 2012 season. A former player, Kyle Reimers, had claimed that the players were asked to sign waivers and were injected with supplements that were "pushing the boundaries". Another former player, Mark McVeigh countered that the injections were only vitamins and all were completely legal and not on any World Anti-Doping Agency banned substance list.