Overview

• Kickoff is at 21:30 (Brasília) with broadcasts on TV Globo and GE TV (YouTube), ESPN (pay TV) and Disney+, and the return leg is set for 24 September at Allianz Parque.
• Visiting fans must gather in Puerto Madero at 16:00 with official ID for police screening before boarding escorted buses to the stadium.
• The protocol bans pyrotechnics, alcohol and flags for the away section, and violations may result in detention according to the official note.
• River expects a full house with tickets reported sold out and large fan displays planned inside the Monumental.
• Palmeiras arrives on strong form after a 4–0 aggregate over Universitario and a 4–1 league win featuring a Vitor Roque hat-trick, and has registered Andreas Pereira, Jefté and Carlos Miguel for the tournament.