Copa CONMEBOL Sudamericana 2026 quarterfinals: Cienciano (PER) advance to the semi-finals on aggregate (return leg vs. Montevideo City Torque, ca. September 17, 2026, Montevideo)

Cienciano (Cusco, Peru) play the first leg on September 10, 2026 at the Estadio Inca Garcilaso de la Vega at approximately 3,400 m altitude against Montevideo City Torque (URU) — a notoriously extreme home advantage in South American football (existing open prediction: Cienciano wins the first leg). The return leg takes place approximately September 17, 2026 in Montevideo at sea level, where Cienciano must perform without their altitude advantage. Historically, Andean clubs in Copa home matches above 3,000 m regularly secure 1–2-goal leads that often offset return-leg away defeats. Slight aggregate favorite, but performance at sea level in Montevideo remains the key variable. No direct prediction market found for this matchup.