Marin Callaghan (Halifax, NS) qualified for the 2020 Mayflower U18 Harvest Spiel playoffs, dropping their quarterfinals match 5-3 against Allyson MacNutt (Truro, NS). of the 2020 Mayflower U18 Harvest Spiel in Halifax, Nova Scotia;
 
Callaghan finished 2-1 in the 0-team qualifying round. . In their opening game, Callaghan lost 8-4 to Celia Evans (Oromocto, NB), then responded with a 7-3 win over Kaitlyn Spicer (Dartmouth, NS). Callaghan won 7-5 against Cassidy Blades (Lower Sackville, NS) in their final qualifying round match.
 
Callaghan ranks th overall on the Year-to-Date rankings with points earned so far this season.