Mike Mottau was born March 19, 1978 in Quincy, Massachusetts. The seventh round, 182nd overall selection of the New York Rangers in the 1997 NHL Entry Draft, Mottau played collegiate hockey at Boston College before making his professional debut in 2000-01
The Hobey Baker winner as college hockey’s top player, Mottau played four seasons at BC capturing numerous awards, including; Second Team All-American honors (1997-98), All-Hockey East First Team honors (1997-98), First Team All-American honors (1998-99), and All-Hockey East Second Team honors (1998-99) to name a few. The Quincy, MA native established and broke the Hockey East’s all-time scoring record for assists and points by a defenceman, registering 79 assists and 93 points in 96 regular season contests in 1999-00 and finished his collegiate career with 27 goals and 130 assists for 157 points in 163 career games.
In 2000-01 Mottau joined the AHL’s Hartford Wolf Pack while suiting up for 18 games with the team’s parent club in New York. An offensively gifted player, Mottau finished his rookie season with 43 points and was subsequently named to the AHL’s All-Rookie Team. After parts of three seasons with the Rangers organization, Mottau was acquired by the Calgary Flames in the early stages of the 2002-03 season. Upon his arrival with the Flames, Mottau joined the team’s AHL affiliate in Saint John and went on to split the remainder of the season between Saint John and Calgary.
In the summer of 2003, the Anaheim Mighty Ducks acquired the former Hobey Baker winner. Mottau would see limited action with the Mighty Ducks and spend the next few years honing his skills in the AHL. In the summer of 2006, Mottau was signed by the New Jersey Devils.
After three season with the Devils in which Mottau would provide the club with steady, if unspectacular play, he signed a two-year deal with the New York Islanders in the summer of 2010.
On February 27, 2012, Mottau was traded to the Boston Bruins along with Brian Rolston in exchange for Yannick Riendeau and Marc Cantin.