Last week Metamoris, a professional submission grappling promotion, announced that Chael Sonnen had signed to grapple Andre Galvao in the main event of their fourth event.
Despite not being an MMA match, the addition of Chael Sonnen has created a lot of buzz around the event, which also added UFC heavyweight Josh Barnett to the line up.
UFC President Dana White also even gave his blessing for Sonnen to compete and discussed the possibility of adding the event to their Fight Pass system.
Today, Metamoris released the first official trailer for the event, which can be seen below:
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