Charlotte Johnston (London, ON) won 6-1 over Ontario's Paige Ballantyne in the Final of the OJCT U18 Championships, held April 26 - 28, 2019 in Guelph, Ontario. To advance to the championship game, Johnston won 5-3 over Emily Deschenes (Manotick, ON) in the semifinals
 
Johnston finished 3-2 in the 0-team qualifying round. . In their opening game, Johnston defeated Tori Zemmelink (Toronto, ON) 8-5, then went on to lose 9-6 against Jessica Guilbault (Grimsby, ON). Johnston lost 7-3 to Deschenes where Johnston responded with a 8-2 win over Ontario's Paige Ballantyne. Johnston won 9-2 against Jenny Madden (Manotick, ON) in their final qualifying round match.
 
. For week 37 of the event schedule, Johnston did not improve upon their best events, remaining at th place on the World Ranking Standings with total points. Johnston ranks th overall on the Year-to-Date rankings with points earned so far this season.