Sport Sinop pulled off a notable 1-0 upset against Cuiabá in the Brazilian Mato-grossense Division 1 on February 13, 2026. The underdog home side defended resolutely to secure a narrow but valuable victory over one of the state's more prominent clubs. The match's only goal came in the first half, with Sport Sinop capitalizing on a defensive error to take a lead they would never relinquish. Cuiabá, expected to dominate possession, created several chances but found the Sinop goalkeeper in inspired form, making a series of key saves to preserve the clean sheet. The home team's disciplined defensive block frustrated Cuiabá's attackers throughout the second half. This result served as a major statement for Sport Sinop, shaking up the early league standings and proving their capability to compete with the division's top sides. For Cuiabá, it was a disappointing away performance that highlighted issues in converting dominance into goals.