Grant Marshall was drafted 23rd overall by the Toronto Maple Leafs in the 1992 NHL Entry Draft. He played 700 career NHL games, scoring 92 goals and 147 assists for 239 points. His name was engraved on the Stanley Cup with the Dallas Stars in 1999 as well as with the New Jersey Devils in 2003.

On December 4, 1990, Marshall was checked into the boards from behind in a game against the Sudbury Wolves. He suffered temporary paralysis but made a full recovery to play in the NHL and win two Stanley Cups.

Since his professional playing career concluded, Marshall has been working with the New Jersey Devils Alumni Association.