The closely bunched implied probabilities for Diogo Costa, Jo Hyeon-woo, and Alexander Domínguez reflect comparable defensive strengths among Portugal, South Korea, and Ecuador entering the World Cup group stage. Each goalkeeper enters with a proven record of consistent shutouts in recent international fixtures and qualifiers, supported by organized backlines that limit high-quality chances. Trader consensus incorporates expected match volume, as teams advancing from groups gain additional opportunities for clean sheets while facing varied attacking threats. Historical patterns from prior tournaments show how stylistic matchups, set-piece vulnerability, and rotation decisions can quickly narrow or widen gaps among these frontrunners.