Ecuador claimed a stunning 1–0 victory over Argentina in World Cup qualification on 9 September, with Enner Valencia's goal proving decisive in a tactical battle decided by clinical finishing. Despite Argentina dominating possession at 57 per cent, Ecuador's compact 4–4–1–1 setup restricted the visitors to zero shots on target across eight attempts, whilst the hosts converted their limited opportunities with ruthless efficiency. Ecuador generated 1.21 xG from 11 shots with four on target, translating that underlying quality into three points; Argentina's xG remained unconverted, with their goalkeeper making three saves from four shots faced at a 75 per cent save rate. The result represents a seismic shift in the qualification table, handing Ecuador a crucial advantage whilst leaving Argentina—despite their territorial superiority—frustrated and searching for answers. Valencia's clinical finishing epitomises Ecuador's efficiency in a match where defensive discipline trumped possession dominance.