Williams said in his written statement that the NFL contends the urine sample he provided to an NFL specimen collector for testing wasn’t from a human.

“We proved—conclusively—at the NFL hearing on this matter that the NFL and its specimen collector wholly failed in their duties to safeguard and process my specimen properly,” Williams said. “In fact, the specimen collector was fired by the NFL after compromising my specimen as well as others.’ The hearing officer, an NFL executive, ignored the NFL’s own policy, engaged in inappropriate communications with top NFL officials about this matter without my knowledge or approval, corrupted the system, ignored that my specimen had been compromised, and now has subjected me to humiliation as well as suspension.”

Williams’ lawyer Peter R. Ginsberg said the specimen collector, whose name he wouldn’t disclose, has said he watched Williams void directly into the specimen bottle, so it would’ve been impossible for the specimen to be non-human.

“This can only be explained by delving into the activities of the specimen collector. The NFL ignored that aspect,” Ginsberg said in a telephone interview.