Maddy Warriner (Listowel, ON) run at the 2020 Ontario U21 Girls Provincials came to an end in the semifinals with a 8-4 loss to Emily Deschenes (Manotick, ON).
 
Warriner finished 4-3 in the 0-team qualifying round. . In their opening game, Warriner defeated Sierra Sutherland (Ottawa, ON) 12-4, then won 7-5 against Kayla Gray (Perth, ON). Warriner went on to lose 10-4 against Mackenzie Kiemele (Elora, ON). Warriner lost 8-2 to Deschenes. Warriner lost 7-6 to Rachel Steele (Port Perry, ON) where Warriner responded with a 8-7 win over Lindsay Thorne (Ottawa, ON). Warriner won 8-6 against Isabelle Ladouceur (Kitchener-Waterloo, ON) in their final qualifying round match.
 
. For week 23 of the event schedule, Warriner did not improve upon their best events, remaining at th place on the World Ranking Standings with total points. Warriner ranks th overall on the Year-to-Date rankings with points earned so far this season.