Considering Kleber Koike Erbst ’s recent 19-1 run in MMA, it’s safe to say he’s gotten a hang of the whole being a competitor thing. But that wasn’t that case a few years ago, when the former KSW featherweight champion was just finding his way on the mats. “A funny thing is that, when I first started at jiu-jitsu, as a white and blue belt, I lost a lot,” Erbst told MMAjunkie with a laugh. “As a white belt, I never won a gold medal
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