Mike Green was born October 12, 1985 in Calgary, Alberta. The first round, 29th overall selection of the Washington Capitals in the 2004 NHL Entry Draft, Green is a graduate of the WHL's Saskatoon Blades.
An offensively gifted defenseman, Green played five seasons in the WHL registering 172 points (37-135-172). A member of the WHL East First All-Star Team (2004-05), Green went on to make his NHL debut with Washington during the 2005-06 season while seeing the majority of his playing time with the AHL's Hershey Bears.
Green went on to register 18 points (3-15-18) in 21 AHL playoff games, leading the Bears to the 2006 Calder Cup title. In 2006-07 Green became a regular on the Capitals blueline, appearing in 70 games. He broke out the following season by recording a career-high 18 goals and 56 points as the Capitals entered the playoffs for the first time since 2003.
On the international stage, Green represented Canada at the 2008 World Championship.