[1] The challenge round was held to determine which nation would qualify for the last Americas Zone spot at the 2017 Ford World Men's Curling Championship and the 2017 World Women's Curling Championship.

Brazil and the United States played a best-of-five series to determine the winner in both the men's and women's event.

However, the World Curling Federation allows for other member nations in the Americas Zone (i.e. Brazil) to challenge Canada and/or the United States for berths to the World Championships.

As hosts, Canada received an automatic berth to the 2017 World Men's Championships.

Canada finished higher than the United States at the 2016 Ford World Women's Curling Championship, and thus received an automatic berth to the 2017 World Women's Championships,[2] meaning Brazil was allowed to challenge the United States rather than Canada for a berth to the 2017 World Championships.