Former UFC middleweight title challenger Chael Sonnen has entered the USADA testing pool and has been tested twice already this quarter. When asked about it though, he joked that a return was unlikely due to the quality of testing.
Sonnen was suspended two years ago by the Nevada Athletic Commission after testing positive for the banned substances anastrozole and clomiphene on May 24th in a random drug test in Las Vegas ahead of his scheduled UFC 175 fight against Wanderlei Silva. Since then, Sonnen has been adamant that his professional mixed martial arts career is over and that he is happy in retirement.