Canada's John Kennedy/Jean Slemko lost 6-2 to Canada's Derrell Sears/John Campbell in the Final of the World Open Stick Curling Championship, held April 24 - 27, 2025 at the Saville Community Sports Centre in Edmonton, Canada. To advance to the championship game, Canada's John Kennedy/Jean Slemko won 4-1 over Canada's Ed Willson/Norm Rivard in the semifinals of the 2025 World Open Stick Curling Championship in Edmonton, Alberta, Canada; and won 6-1 over Canada's Thomas Steele/Rod Chmiliar in the quarterfinals. of the 2025 World Open Stick Curling Championship in Edmonton, Alberta, Canada;
 
Canada's John Kennedy/Jean Slemko finished 4-1 in the 0-team qualifying round. . In their opening game, Canada's John Kennedy/Jean Slemko defeated Canada's Jim Jerome/Rob Faulds 6-4, then won 4-3 against Canada's Ken Petteplace/Dale Bawol. Canada's John Kennedy/Jean Slemko went on to lose 4-1 against Canada's Derrell Sears/John Campbell. Canada's John Kennedy/Jean Slemko responded with a 4-2 win over Canada's Terry Forman/Mike Chupka. Canada's John Kennedy/Jean Slemko won 5-3 against Canada's John Cabaj/Dan Rouault in their final qualifying round match.
 
Canada's John Kennedy/Jean Slemko ranks th overall on the Year-to-Date rankings with points earned so far this season.