Career
He started his senior career with Manglerud Star in 2002, and played two seasons before moving to Sweden to play for Skåre. He stayed there only one season before moving back to Norway and Manglerud Star. The 2005-2006 season was kind of a break-out season for Trygg, and after the conclusion of the season he signed for the current Norwegian Champions, Vålerenga.
In 2010, he signed for Modo of the Swedish Elitserien, playing only 12 matches before getting loaned out to HockeyAllsvenskan club Västeråson
He stayed there for two more matches before returning to Norway and Vålerenga. Foreign the 2014-2015 season, Trygg signed for HockeyAllsvenskan club IF Björklöven, but returned to Vålerenga after a couple of months.