Casey (1-1) suffered a third-round submission loss in the Oct. 18 XFC title fight against Gonzalez, which made the latter the XFC's inaugural women's flyweight champ.
Casey believes her opponent's spray tan made her slippery and was a banned substance since the Unified Rules of MMA prohibit grease or any foreign substances on a fighter's face or body.
Following the loss, Casey called for a rematch against Gonzalez.
"I want a rematch, and I think it'd be a great fight," Casey said. "We did three rounds of amazing work, and it was a great show, and it was a great fight. But I can't live with the fact that someone had a banned substance on them and that I couldn't implement my game plan because of that substance.
"I just want to have a fair fight. And like I said, I wasn't able to do what I needed to do as a submission fighter because of the tanning oil."
The Tennessee Athletic Commission is currently reviewing her appeal, and it could take a few days for the final decision to come through.
Does Casey have a legitimate reason to appeal the loss? That all depends who you ask, but the video evidence from the fight does make her case much stronger.
Casey's shorts and top were heavily stained from Gonzalez's spray tan, so it does appear the substance used for the tan was slippery enough to rub off during the fight.
On the other hand, spray tans are known to dry the skin out, not make it slippery.
Does Casey have a legitimate reason to appeal her loss to Gonzalez? Let us know in the comments or tweet the author, @ericholden.