Bruin made his first appearance of the 2019 season on March 30, coming off the bench in a 0–0 draw against Vancouver. On April 1, Bruin played a game for Seattle's USL Championship affiliate, the Tacoma Defiance, scoring once and adding an assist in a 2–1 win over Sacramento Republic. On April 13, he scored twice as the Sounders defeated Toronto FC 2–0. On June 18, Bruin tore his ACL during practice, ruling him out for the rest of the season. In Bruin's absence, the Sounders went on to win MLS Cup 2019.