Jake Shields Jake Shields  today admitted to taking a banned diuretic supplied by a friend prior to UFC 150. Shields (30-7-1), 36, spoke to the Nevada State Athletic Commission via telephone while seeking a license to fight Brian Foster (22-6) at WSOF 17 on Saturday in Las Vegas. Fighters who are older than 35 are required to appear before the commission. Shields was granted a conditional license pending the completion of his pre-fight medical paperwork, which lacks a clean MRI and hepatitis-B test. His fight headlines WSOF 17, which takes place at Planet Hollywood in Las Vegas. The main card airs on NBCSN following prelims on MMAjunkie. Open records laws in Colorado prevented the state’s athletic commission from disclosing the banned substance for which Shields tested positive following a victory over Ed Herman at UFC 150, which took place in Denver on Aug