But he did talk about the argument presented at his appeal hearing on Friday, which involves a question over the procedure the league followed.

"I think it went well," Sherman said. "We pleaded our case. We proved that they made procedural errors. That they violated the chain of custody. That the tester grabbed the cup, an unsealed cup, and poured my urine into it. That's a violation, but the league says they can do that and get away with it.

"I may still lose because it is up to the league. It's not a neutral court."

Sherman said that's because the person who presides over hearing the appeal works for the league.

"It's definitely not fair," he said. "If it was in a neutral court, I'd be very confident that I would win. But it's not a neutral court so you have to deal with what you have to deal with."