**SC Paderborn, Hamburger SV, and Union Berlin lead early relegation discussions in the 2026-27 Bundesliga after four matchdays.** The newly promoted trio—Schalke, Elversberg, and especially Paderborn—face the classic adaptation test against established squads, with Paderborn’s third Bundesliga stint marked by a history of immediate relegation and a winless start that includes defensive lapses. Union Berlin and Borussia Mönchengladbach sit near the bottom following heavy defeats and zero wins, while Hamburg’s goal difference highlights ongoing struggles. Trader consensus reflects these opening results, squad depth gaps, and the long 34-game schedule ahead, where European fixtures for stronger sides could ease pressure on the lower table but leave promoted clubs exposed in tight matches. Early form, defensive organization, and experience in the top flight remain the dominant variables.