The UFC’s partnership with the United States Anti-Doping Agency (USADA) is nearing its eighth year.
In 2021, USADA tested a total of 744 mixed martial artists a combined 4,259 times. While many athletes were randomly tested less than 10 times, some were tested two dozen – and some others, even more. The totals represented 702 more tests and 24 more athletes than in 2020.
With testing data available on USADA’s official website, here are the 10 fighters who were tested the most from Jan. 1 to Dec. 31, 2021.