Arsenal lead the implied probabilities at 21.5% for most clean sheets in the 2026/27 UEFA Champions League league phase, driven by their proven defensive organization under Mikel Arteta, featuring William Saliba, Gabriel, and David Raya, plus a 1-0 win at Napoli on matchday one that extended their strong recent European shutout record. Bayern Munich (15.5%) and Manchester City (14.5%) sit close behind after comfortable opening clean sheets against Bodø/Glimt and Porto, respectively, reflecting squad depth and high-pressing styles suited to the eight-match format. Liverpool and several mid-tier sides trail at single-digit levels amid tougher early fixtures and variable form. The bunched market reflects the competitive balance across 36 teams, where fixture difficulty, rotation, and minor injuries can quickly shift outcomes over the remaining matchdays.