As a result, they represented the United States at the 2005 World Men's Curling Championship, where they just missed the playoffs when they lost a tiebreaker game to Norway's Pål Trulsen.

At the Olympics they lost to Canada, skipped by Brad Gushue, in the semifinals and then defeated David Murdoch's Team Great Britain to take the bronze medal.

At the 2006 World Men's Championship, held in Lowell, Massachusetts, they finished in fourth place when they lost the 3 vs 4 page playoff game to Norway's Thomas Ulsrud.

They represented the United States at the 2011 Ford World Men's Curling Championship in April at Regina, Saskatchewan, finishing in 10th place with a 3–8 win–loss record after a series of close losses.

In the semifinals they defeated Canada's Kevin Koe, a two-time world champion, to reach the gold-medal match versus Niklas Edin's team representing Sweden.

Peterson and Polo finished the round-robin group play undefeated, losing to Russia's Alexander Krushelnitskiy and Anastasia Bryzgalova in the semifinals.

At the 2017 US Mixed Doubles Championship Polo and Peterson earned the silver medal losing to the brother and sister duo of Matt and Becca Hamilton in the final.

At the 2019 United States Mixed Doubles Championship, Polo and Peterson went undefeated through the round-robin section of the tournament but ultimately lost in the semifinal to eventual champions Cory Christensen and John Shuster.