He then played three seasons for the Montreal Canadiens from 1970-1972. He was included on the team's championship photo and has a Stanley Cup ring, but did not play enough games to have his name engraved on the Stanley Cup.
After being selected off waivers by the Toronto Maple Leafs in the summer of 1972, he instead choose to sign a contract with his hometown New England Whalers of the upstart World Hockey Association (WHA), being the first player signed by the team.[1] Pleau became one of the Whalers' early stars and appeared in the 1973, 1974 and 1975 WHA All Star Game as the Whalers representative. He was also a member of the United States team at the inaugural 1976 Canada Cup, although he did not appear in the tournament itself. He played seven seasons for the Whalers before retiring in 1979.
Pleau joined the New York Rangers as assistant general manager of player development in 1989, and was later promoted to assistant general manager and director of player personnel. He stayed with the Rangers for eight years, including the Rangers' Cup-winning season in 1993–94.
He moved to the Blues in 1997 as general manager. The Rangers received winger Mike Peluso from the Blues as compensation.[2] While Pleau presided over the Blues' winning the Presidents' Trophy in 1999–2000, the Blues steadily declined over the next few seasons, culminating in finishing dead last in the league in 2005–06, missing the playoffs for the first time in 25 years and for only the fourth time in franchise history. Following the season, the Blues were sold to Dave Checketts. Pleau kept his job as general manager, but had to give most of his powers over hockey operations to John Davidson.
Pleau was also assistant general manager of the silver medal-winning American hockey team at the 2002 Winter Olympics, and was general manager of Team USA during the 2003 and 2004 IIHF World Championships and the 2004 World Cup of Hockey.
Pleau stepped down as general manager of the St Louis Blues on July 1, 2010, with Doug Armstrong taking his place. Pleau was then named senior advisor to hockey operations, and vice president, with the Blues after 13 years as the club's general manager, the longest tenure in franchise history.
