Chael Sonnen has announced that his grappling promotion, Submission Underground, will return to action this May. After a nearly five-year hiatus, Submission Underground (SUG) will return this May. On Wednesday, SUG president Chael Sonnen announced on social media that the next SUG event is set to take place in Brazil
The post Chael Sonnen announces the return of Submission Underground appeared first on Grappling Insider.
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