- Category : 1979-births
- Type : ME
- Profile : 3/5 - Martyr / Heretic
- Definition : Triple Split
- Incarnation Cross : RAX Service 3
American left fielder, designated hitter, and first baseman in Major League Baseball (MLB) who played for the New York Yankees (2007–2009), Cleveland Indians (2010–2012) and Tampa Bay Rays (2013). He is currently the Major League Field Coordinator for the Toronto Blue Jays since 2019.
Duncan is the oldest son of Dave Duncan, an MLB catcher and pitching coach. His younger brother, Chris (1981-2019), was also an MLB first baseman and outfielder.