Career
Mannion holds the rare distinction of having experience in all four Major League sports: MLB, National Hockey League, National Basketball Association, and NFL. After graduating college, Dennis Mannion began his sports management career in Major League Baseball, spending 16 years with the Philadelphia Phillies from 1982 to 1997. He worked his way up through the Phillies organization to serve as Vice President of Marketing and Sales for eight seasons. In Philadelphia he developed a reputation for making major league baseball a fun activity for all fans, young and old, at Veterans Stadium.
Mannion played a key role as well in bringing the 1996 MLB All-Star Game to Philadelphia.
Mannion left the Phillies in 1997 for a position as Senior Vice President of Ascent Sports in Denver, Colorado. His duties included handling business operations for the Accent-owned National Hockey League Colorado Avalanche and National Basketball Association Denver Nuggets.
Mannion also oversaw the movement of both teams games and operations to the newly built Pepsi Center. His next career move saw Mannion back on the east coast, working in management for the Baltimore Ravens, serving eight seasons as Senior Vice President of Business Ventures from 1999 til 2007.
While working for the Ravens organization he oversaw the development of television and radio shows focusing on the team, expanded Ravens branding opportunities and revenue streams, and brought such events as the 2000 and 2007 Army-Navy Game to M&T Bank Stadium.
Dennis Mannion was on the move again in November,2007, joining the Los Angeles Dodgers. He worked as Executive Vice-President and Chief Operating Officer from November, 2007 until March 2009 when he was promoted to President and Chief Executive Officer. Under his leadership the Dodgers led the league in game attendance, and reached the National League Championship Series two consecutive years. With ownership changes in Detroit, and pending change in ownership of the Dodgers organization, Mannion took on his current position in 2011.
A native of New York, Mannion graduated from the University of Massachusetts in 1981 with a bachelor’s degree in Business and Sports Management.
