David Michael Trembley is an American professional baseball coach, manager, and executive who recently served as the director of player development for the Atlanta Braves of Major League Baseball (MLB) in 2015. Trembley has been the bench coach for the Houston Astros and a manager of the Baltimore Orioles. Before managing the Orioles, Trembley was a minor league manager for twenty seasons, compiling a 1,369–1,413 record. He won two league titles and earned Manager of the Year awards in three leagues. In December 2001, Baseball America selected him as one of minor league baseball's top five managers of the previous 20 years. He served as a coach in the inaugural Futures Game in 1999 and also served as manager for the Southern League and Double-A All-Star Games that season. Trembley has worked for the Baltimore Orioles, Chicago Cubs, Pittsburgh Pirates, San Diego Padres and Atlanta Braves.