- Bats Right, Throws Right
- Height 5' 11", Weight 175 lb.
- Schools Northern Arizona University, Grand Canyon College, Cochise College
- High School Winston Churchill High School
Greg Duce was a slugging first baseman for the Canadian Olympic team.
Duce played for Canada in the 1977 Little League World Series. In high school, he was a star not only in baseball, but also in basketball and football. Duce went on to play college ball in the US, winning MVP honors in the 1986 NAIA College World Series. He played for Canada in the 1987 Intercontinental Cup and 1987 Pan American Games. In the 1988 Baseball World Cup, Duce hit .359/.457/.513 with 12 runs in 11 games as Canada's starting first baseman. He was second among Canada's starters in OBP (12 points behind Greg Roth) and outslugged teammate Matt Stairs. Duce also had a better OBP than the Cup's All-Star 1B, Tino Martinez. He then had the highest average of any player in the 1988 Olympics, going 7 for 13 with a double, walk, 3 runs and 3 RBI; Terushi Nakajima was second, at .476, 62 points behind Duce.
He later served as assistant principal and athletic director at Buena High School.