Sean Robertson brings junior-year size and depth to Merrimack’s secondary
Sean Robertson is a 6-foot, 190-pound junior defensive back for Merrimack in the 2026 season, and the main thing to care about is his steady roster presence in a deep DB room rather than a flashy stat line.[1][7] He was listed on Merrimack’s 2025 and 2026 rosters after arriving from Stone Bridge High School in Ashburn, Va., and the available team pages show no recorded season statistics yet, so his value looks like development, versatility, and physicality more than proven production at this level.[1][7] If a staff wants a longer, bigger-bodied defensive back with room to grow and compete for snaps, Robertson fits the “upside and depth” profile.[1][5][7]
