He started his junior career with the Tri-City Americans in the WHL, steadily improving his point totals in three seasons with the team.

For the 1991–92 season, Sandwith split time with the Brandon Wheat Kings and the Saskatoon Blades.

Having never played a game with Philadelphia, Sandwith signed with the Edmonton Oilers as a free agent in April 1996.

He later played in the minor leagues for the Anaheim Ducks and Toronto Maple Leafs organizations.

In 1995, Sandwith played with RHI's Los Angeles Blades, totalling 11 points in 11 games.