In 1994, Pottinger was an alternate for Erika Brown's silver medal-winning team at the 1994 World Junior Curling Championships. Pottinger picked up another silver medal at the 1996 World Curling Championships as the lead for Lisa Schoeneberg. In 1999, Pottinger won another silver medal, this time playing second for Patti Lank. In 2003, she had moved up to the position of third, and played for Debbie McCormick. In 2003, they won the first gold medal for an American team at the World Curling Championships. They would go to the Worlds again in 2006, where they won a silver medal.