In 2009, Stopera teamed up with Matt Hames, Martin Sather, and Dean Gemmell, and finished 4th at the 2010 United States Men's Curling Championship.

That year Stopera and the team competed in the 2011 United States Men's Curling Championship, finishing fourth after a playoff loss to Todd Birr.

Midway through the season, Mark Lazar was brought on to play lead and replace Calvin Weber, moving Martin Sather to second.

Stopera and team qualified for the 2016 United States Men's Curling Championship in Jacksonville, Florida where they had a poor showing, coming in 10th place.

Despite losing second Peter Austin to a torn abdominal muscle he suffered while sweeping in the middle of the competition, Stopera and his 3-man team won the championship, defeating Illinois in the final.