Mike Tyson, Wiz Khalifa, and Nate Diaz sponsor athletes at High Rollerz 15
The 420-friendly grappling promotion High Rollerz is making some big connections. The organization recently announced that High Rollerz 15 will take place on Saturday, May 14 and will feature an eight-man tournament. Each of those eight competitors are backed by a celebrity sponsor; those sponsors include big names like Mike
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