Switzerland, Scotland, Slovenia, and North Macedonia make up UEFA Nations League 2026-27 Group B1, with the winner advancing toward promotion contention in League A. All four sides enter the league phase with zero matches played and identical 0-0-0 records ahead of Matchday 1 on 26 September. Switzerland carries a modest edge in squad depth and recent Nations League experience, yet Scotland’s higher ranking position and home advantage at Hampden Park, combined with Slovenia’s organized defensive record and North Macedonia’s counter-attacking threat, keep the field tightly contested. The six-match round-robin format and absence of pre-season injuries or coaching changes further compress probabilities, as any single result can shift the group standings dramatically in the opening international window.