Manning played for New Westminster Salmonbellies Jr. A of the BC Junior A Lacrosse League.
With them in 2008, he was named the Inside Lacrosse Indoor Junior Defender of the Year and First Team All Canadian.
[4] While playing for the Simon Fraser Clan in the Pacific Northwest Collegiate Lacrosse League (PNCLL), he was named Division 1 MCLA 1st team All-American in 2008 and 2nd team All-American in 2009 as well as the PNCLL MVP in 2009 and 2010.
[5][6] After finishing his degree in Kinesiology from SFU, he went on to study medicine at the University of British Columbia.
[9] During the summers, Manning has played for the New Westminster Salmonbellies in the Western Lacrosse Association.