's Cliff Kostiuk run at the 2015 Peace Curling Tour Championship: Challenge came to an end in the semifinals with a 7-2 loss to 's Terry Sandnes.
 
's Cliff Kostiuk finished 2-1 in the 0-team qualifying round. . In their opening game, 's Cliff Kostiuk lost 7-5 to 's Terry Sandnes, then responded with a 6-4 win over Dustin Turcotte (Falher, AB). 's Cliff Kostiuk won 7-2 against 's Donald Dumont in their final qualifying round match.
 
. For week of the event schedule, 's Cliff Kostiuk did not improve upon their best events, remaining at th place on the World Ranking Standings with total points. 's Cliff Kostiuk ranks th overall on the Year-to-Date rankings with points earned so far this season.