He was the long-time second for the Randy Ferbey rink from 1998 to 2010, winning four Briers and three World championships with the team.

He later served as the alternate for the Kevin Koe rink with whom he won a Brier and world championship, and represented Canada at the 2018 Winter Olympics.

He finished third at the '97 World Junior Curling Championships and became the '98 Shamrock Poor Boy champion.

As a member of Team Ferbey, Pfeifer won Briers in 2001, 2002, 2003 and 2005 and World championships in 2002, 2003 and 2005.

[2] Pfeifer is currently a performance consultant for Curling Canada[3] In 2023 Pfeifer and his Team Ferbey rinkmates (Randy Ferbey, David Nedohin and Marcel Rocque) were inducted into Canada's Sports Hall of Fame.