David Shelley Duncan (born September 29, 1979, in
Tucson, Arizona) is a corner outfielder/first
baseman/designated hitter on the New York Yankees.
His younger brother, Chris Duncan, is an outfielder
and first baseman for the St. Louis Cardinals and
his father, Dave Duncan, is the Cardinals' pitching
coach and a former Oakland Athletics catcher.
Shelley and his brother Chris grew up in the Oakland
A's clubhouse when their dad served as a pitching
coach there. Tony La Russa is said to be like an
uncle to them. He is sometimes referred to as Slam
Duncan because of his home run swing and his hard
high-fives. As a kid, Shelley was often teased for
having a girl's name.
