Argentinos Juniors pulled off a significant upset by defeating River Plate 1-0 at the Estadio Diego Armando Maradona on February 13, 2026. This result sent shockwaves through the Liga Profesional, as the home side managed to stifle one of Argentina's most powerful attacking units and snatch a famous victory. The only goal of the game came from a well-worked set-piece in the first half, with Argentinos Juniors' defender rising highest to head home from a corner. River Plate dominated possession throughout but struggled to break down a disciplined and fiercely committed defensive block, with their best chance hitting the post in the second half. The win was a massive boost for Argentinos Juniors' campaign, showcasing their tactical discipline and resilience against the league giants, while River Plate's title aspirations suffered a surprising early-season setback.