Tim Murdoch has been a long-time resident of Montreal, having his start in Princeton, New Jersey. He volunteered for 17 seasons as the head coach of McGill men’s varsity lacrosse team from 2003 to 2019, finishing with a career record of 191-88-2 in 281 contests for an overall winning percentage of .684.

He guided the program to nine CUFLA East pennants (2007, 2011-2017, 2019), four undefeated regular seasons (2013-2015, 2019) and two national championships, claiming the league's Baggataway Cup in 2012 and 2015.

In 2018, Murdoch received the Honora Shaughnessy Ambassador Award, presented to a friend of McGill who has made an exceptional contribution to the University as a role model in fostering loyalty, professionalism and team spirit.

Murdoch played a leadership role in establishing the Canadian Lacrosse Foundation McGill Indigenous Lacrosse Scholarship for student-athletes. In 2019, the “Tim Murdoch Fund” was established to memorialize Murdoch’s coaching career at McGill.

Murdoch has contributed much to the growth of the game in the city. He founded the Westmount Lynx youth field lacrosse program with the city of Westmount in 2006, served as head coach of the Quebec under-19 squad at the 2013 national championship for the First Nations Trophy, and sat on the advisory board of Canada’s 150th Celebration of Lacrosse at McGill (June 2017).

In 2007, he and his McGill assistants were voted CUFLA coaching staff of the year. Under Murdoch's guidance, the team has received the Harry Griffiths Trophy four times (2008, 2009, 2012, 2015) as the most outstanding sports club at McGill.