Cassandra Lewin/Russell Cuddie (Ottawa, ON) qualified for the 2018 Ilderton Mixed Doubles Spiel playoffs, dropping their quarterfinals match 7-1 against Kimberly Tuck/Wayne Tuck Jr. (Ilderton, ON).
 
Lewin/Cuddie finished 2-1 in the 16-team qualifying round. . In their opening game, Lewin/Cuddie defeated Janet Mathers/Drew Dalgeish (Ilderton, ON) 9-5, then won 9-5 against Joanne Curtis/Brodie Tarvit (London, ON). Lewin/Cuddie went on to lose 7-1 against Tuck/Tuck Jr. in their final qualifying round match.
 
. For week 15 of the event schedule, Lewin/Cuddie did not improve upon their best events, remaining at th place on the World Ranking Standings with total points. Lewin/Cuddie ranks th overall on the Year-to-Date rankings with points earned so far this season.