The career of former UFC flyweight title challenger Ian McCall may be over.

McCall once racked up a four fight win streak and competed in back-to-back contests with legendary UFC flyweight champion Demetrious Johnson. Their first meeting ended in a draw while the second fight ended with "Mighty Mouse" taking home a unanimous decision win. Following his championship pursuit, McCall suffered a unanimous decision loss to Joseph Benavidez before racking up two straight wins. He was last seen in the Octagon back in January of 2015 when he was defeated by John Lineker via unanimous decision. 

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Since then, McCall has made various attempts to return to the Octagon as he has been scheduled to compete on several cards. However, multiple injuries to both he and his opponents, as well as other factors have prevented him from resuming his fighting career. Many have begun to wonder if we may have seen the end of "Uncle Creepy's" mixed martial arts (MMA) career, and he took to The MMA Hour yesterday (Mon. August 7, 2017) to break his silence on the matter.

McCall revealed that he is currently undergoing brain treatment and has put his fighting career on hold, a career that he claims to regret altogether (quotes via MMA Fighting):

“I don’t want to say anything bad about the UFC,” McCall said. “The UFC has taken care of me since day one. They’ve never wronged me, they’ve never done anything bad. This is my own fault.

"This is my own doing. Picking this sport as a profession … overdosing on drugs when I was down and out. There’s a lot wrong with my brain, it’s not just the punching. And on top of that 15 years of fighting professionally isn’t good for you.

“I don’t know if I’ll fight again. I have to figure out these issues. We still have no idea what’s wrong with my stomach. Doctors haven’t been able to figure out anything really, so I’m on my own. I’m sitting here trying this brain stimulation treatment for six weeks and hopefully it works.”

“I’m doing brain treatment down in San Diego that’s helping,” McCall said. “Jeff Novitzky set me up with transcranial magnetic stimulation, it really does help my brain so that’s a plus.

"I saw a lot of bad signs, still seeing a lot of bad signs just with CTE-type stuff, TBI stuff, so it scared me. I went down there and I’m trying to fix it. Fix the depression and all the stuff that comes with that, we’ll see. I’ve got another month left.”

“My whole career is a regret … I don’t hold any ill will toward the sport, it’s a weird place that people at the end of their career kind of go over. And no one talks about it, people fight it. I’m not gonna fight it,” McCall said.

“People make Chris Benoit out to be - I always thought he was a f*cking monster for what he did. And then being with (my wife) Alicia and being around wrestlers and the stories you hear about Chris and how good of a person he was and how amazing of a father he was, all of this stuff, and it’s the TBI or drugs - I’m not saying he was on drugs - or steroids or whatever.

“That stuff drives people crazy and for me to think that through hurting my brain I could hurt someone else, like the people I love? Sorry. Not gonna happen. I’m not going to ever, ever let that happen.

"So I’m at least going to hop on it now and try and fix it before it gets worse and if I can fight again then cool. If I don’t fight again then sure, my whole career is a regret, but whatever, I had a lot of fun.”

What are your thoughts on McCall possibly calling it a career and regretting his entire MMA run? Have your say in the comments section below!