Roy Nelson isn’t pleased with the way the U.S. Anti-Doping Agency (USADA) has handled drug testing since the organization partnered with the UFC in July 2015.

Nelson (21-13 MMA, 8-9 UFC), who fights Antonio Silva (19-9-1 MMA, 3-6-1 UFC) in Saturday’s UFC Fight Night 95 heavyweight co-headliner, said questioned the level of transparency from USADA in the lead up to his fight, which takes place at Nilson Nelson Gymnasium in Brasilia, Brazil. The card airs on FS1 following early prelims on UFC Fight Pass.

In light of the situation involving Brock Lesnar at UFC 200, namely how the former heavyweight champion was granted an exemption for the four-month testing period for an athlete coming out of retirement – and then being hit with two potential anti-doping sanctions – Nelson said he hopes to get some assurances both Silva and his own results will come back before entering the octagon on Saturday.

This was especially important to “Big Country” given Silva’s history. “Bigfoot” had been flagged for banned substances twice in his career – once in 2008 and again in 2013 – but Nelson said he doesn’t know when the Brazilian was last tested or if his results will come back before fight night.

“We got USADA doing the testing, and I got tested last week, and I said, ‘Are the tests going to be back before the card I’m fighting on?'” Nelson told MMAjunkie. “They said they don’t know. So that’s how good USADA is.”

Nelson is an outspoken anti-PED advocate. He was most recently tested on Sept. 7, but he was clearly unhappy with the conversation he had with sample collectors (via Facebook):

Another smell test done! @usada asked if results will be back before fight. I got I don't know. So why test @ufc waste of money, $$$ could be mine. #fjeff Posted by Roy "Big Country" Nelson on Wednesday, September 7, 2016

UFC officials are estimated to be spending several million dollars for year-round drug testing for its 500 contracted fighters, but Nelson said he has questions about how those resources are being allocated.

“I want to know how much (UFC Vice President of Athlete Health and Performance) Jeff Novitzky gets paid and how much USADA gets paid because I could take their jobs and do a 10 times better job,” Nelson said. “I’d actually just make sure it actually counts and not give certain guys a pass. Then, when there’s a guy we don’t care about, he all of a sudden pops or pops after the fight then suspend them for a year after you’ve already made money off them. It doesn’t make any sense.”

When pressed to detail exactly what adjustments or improvements he would make to the program, Nelson mentioned little outside of stressing the importance of learning results before fight night. Silva is the seventh opponent Nelson has faced during his career who had some sort of drug-testing failures, and that doesn’t include Jeff Monson, who never failed an official drug test but has openly admitting using performance-enhancing substances.

Although the UFC-USADA relationship is still only 14 months old and kinks continue to be worked out over time, Nelson said a lot more can be done. And he would like it if fighters such as himself were asked for input on how to do that.

“It can definitely get better,” Nelson said. “I’ll take Jeff’s job and still keep my job, and I could do a better job because it’s not that hard. It’s not that hard to do the smell test.”

For more on UFC Fight Night 95, check out the UFC Rumors section of the site.