Sam Mooibroek (Kitchener-Waterloo, ON) run at the 2020 Ontario U21 Boys Provincials came to an end in the semifinals with a 7-6 loss to Jordan McNamara (Ottawa, ON). of the 2020 Ontario U21 Boys Provincials in Guelph, Ontario, Canada;
 
Mooibroek finished 4-3 in the 0-team qualifying round. . In their opening game, Mooibroek defeated Brady Lumley (Welland, ON) 9-2, then won 10-5 against Owen Purdy (Kingston, ON). Mooibroek went on to lose 7-2 against Nicholas Bissonnette (Coldwater, ON). Mooibroek responded with a 9-1 win over Kai Collins (Ottawa, ON). Mooibroek won 9-4 against Ryan Hahn (St. Catharines, ON). Mooibroek went on to lose 8-7 against McNamara. Mooibroek lost 7-5 to Landan Rooney (Alexandria, ON) in their final qualifying round match.
 
. For week 23 of the event schedule, Mooibroek did not improve upon their best events, remaining at th place on the World Ranking Standings with total points. Mooibroek ranks th overall on the Year-to-Date rankings with points earned so far this season.