Sean Duncan is an impressive left-handed pitcher from north of the border, hailing from Port Coquitlam, British Columbia. Duncan is currently our No. 46 prep player and No. 99 overall player in the 2026 class. In a draft full of talented lefty prep arms, Duncan separates himself with polish and an extensive track record.
Duncan is as battle-tested as they come. Since the age of 14, Duncan has been facing professional hitters in myriad experiences. Duncan performed on the typical prep circuit, he’s played for Team Canada, he appeared in the MLB Draft League, and has even played in the Dominican Summer League, where he struck out now top-five prospect Jesus Made.
Duncan represented Canada in the Little League World Series in 2019, where he was teammates with 2025 Blue Jays draftee Tim Piasentin. The two still have a close relationship, despite Piasentin moving to Alberta after the …