Pfister skipped the Swiss team again at the 2018 World Men's Curling Championship. He led his team to a 6–6 record, in 7th place. They narrowly missed the playoffs, as they had the same record as the United States, but missed the playoffs by virtue of losing their last round robin game to the Americans who qualified in their stead. That season, Team Pfister won the German Masters which would qualify for them to play in the 2018 Humpty's Champions Cup, Pfister's first Grand Slam event as a skip. There, he went winless, missing the playoffs.