The former Major League Baseball outfielder played for the Chicago Cubs, Texas Rangers, and San Diego Padres, where he began his coaching career.

As a player, Dascenzo was a switch hitter who threw left-handed; he stood 5 feet 7 inches (1.70 m) tall and weighed 150 pounds (68 kg).

Dascenzo ended his career as a member of the San Diego Padres organization after the 1996 season and took a job with the team as a roving minor league instructor.

He made his managerial debut with the Padres' Northwest League affiliate, the Eugene Emeralds, in 2006 where he guided the Ems to a 43-33 finish.

In October 2011, Doug accepted a position with the Atlanta Braves as their minor league base running and outfield coordinator.