Tabitha Peterson/Joe Polo (Chaska, MN) lost 6-5 to Monica Walker/Alex Leichter (Boston, MA) in the Final of the Curve US Open of Curling Mixed Doubles, held August 13 - 15, 2021 at the Four Seasons Curling Club in Blaine, United States. To advance to the championship game, Peterson/Polo won 7-3 over Jamie Sinclair/Rich Ruohonen (Chaska, MN) in the semifinals of the 2021 Curve US Open of Curling Mixed Doubles in Blaine, Minnesota, United States; and won 7-4 over Madison Bear/Andrew Stopera (Chaska, MN) in the quarterfinals. of the 2021 Curve US Open of Curling Mixed Doubles in Blaine, Minnesota, United States;
 
Peterson/Polo finished 3-1 in the 14-team qualifying round. . In their opening game, Peterson/Polo defeated Kirstin Nickel/Gabriel Nickel (Robbinsdale, MN) 10-1, then won 9-4 against Daisy MacCallum/Brian Terwedo (Minneapolis , MN). Peterson/Polo went on to lose 7-2 against Tara Peterson/Kroy Nernberger (Chaska, MN). Peterson/Polo responded with a 6-5 win over Jenna Burchesky/Ben Richardson (New Pond, MA) in their final qualifying round match.
 
Peterson/Polo ranks 321st overall on the Year-to-Date rankings with 0.000 points earned so far this season.