LAS VEGAS, NV - MARCH 05: Martin Iosefo of the United States tackles Rosko Specman of South Africa during the USA Sevens Rugby tournament at Sam Boyd Stadium on March 5, 2017 in Las Vegas, Nevada. (Photo by Isaac Brekken/Getty Images)

LAS VEGAS, NV - MARCH 05: Martin Iosefo of the United States tackles Rosko Specman of South Africa during the USA Sevens Rugby tournament at Sam Boyd Stadium on March 5, 2017 in Las Vegas, Nevada. (Photo by Isaac Brekken/Getty Images)