Lamoriello joined the Devils as President and General Manager in 1987. Throughout his tenure in New Jersey, the Devils went to the Stanley Cup Playoffs 21 times, posted 13, 100-point seasons, won nine division titles and went to the Stanley Cup Final five times. New Jersey also earned 13 consecutive post-season berths from 1997-2010. In 1995, New Jersey's American Hockey League affiliate, the Albany Devils, won the Calder Cup, marking the third time an NHL organization and their AHL franchise won both championships in the same season.
Lamoriello has compiled a lifetime regular-season record of 1,294-904-179-159 (2,536 GP) (W-LT-OT) and a lifetime Stanley Cup Playoffs record of 156-135 (291 GP). Lamoriello served as the Devils' Head Coach for 50 regular season games in 2005-06 (32-14-4) and the final three regular season games in 2006-07. The Devils qualified for the playoffs and reached the Eastern Conference Final in both seasons.
In addition to his responsibilities with the Devils, Lamoriello was named vice chairman and CEO of the National Basketball Association's New Jersey Nets after the hockey team was purchased by YankeeNets. Following back-to-back appearances in the NBA Finals in 2002 and 2003, Lamoriello relinquished his posts with the Nets when YankeeNets sold the basketball franchise to an independent owner in 2004.
Internationally, Lamoriello served as the General Manager for Team USA at the World Cup of Hockey in 1996. Team USA won the inaugural tournament championship, defeating Team Canada in a best-of-three final. He also served as General Manager for Team USA at the 1998 Winter Olympics in Nagano, Japan. The Johnston, RI native was inducted into the United States Hockey Hall of Fame in 2012 and received the Lester Patrick Trophy in 1992 in recognition of his service to hockey in the United States.