Boca Juniors and Vasco da Gama meet again this Tuesday night with a place in the Copa Sudamericana 2026 final at stake. The return leg of the semifinal is set for the Maracaná in Rio de Janeiro. Vasco, the club Brazilians call the Gigante da Colina, took the first leg 1-0. That slim margin leaves Boca needing to score just to stay alive in the tie. A win by two goals or more would carry the Argentines straight into the final. A one-goal victory would send the series to penalties, since away goals no longer count in CONMEBOL competition. Vasco only have to protect their lead, and a goal of their own would force Boca to score at least three. An evening kickoff in Rio promises a tense night in front of the home crowd.