Dernier, currently the Cubs' roving Minor League baserunning instructor, played for the team from 1984-87. He compiled a .255 average in 904 games for the Phillies and Cubs, and stole 218 bases. He was caught just 63 times.
In 1984, Dernier swiped 45 bases, setting a then-club record for most stolen bases by a center fielder. He also won a Gold Glove that year, and was the first Cubs outfielder to claim that honor.
Wasserstrom has worked full time for the Cubs since 1988, and moved into Baseball Operations after the 2003 season.
He reports directly to Cubs general manager Jim Hendry and assistant general manager Randy Bush. Wasserstrom's responsibilities include statistical analysis and evaluation of players within the Major and Minor Leagues, as well as outside of the organization.
He also assists the coaching staff with statistical and informational needs.
Chase was named Cubs director of media relations in January, and prior to joining the Cubs he had spent seven seasons with the Boston Red Sox. He began as a media relations intern with the Red Sox in 2000 before he was promoted to media relations assistant in 2002.
Carrie Muskat is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.