What happened: The NFLPA cited player health and safety in raising questions about the playing surface in Brazil. The Ravens have arrived in Rio, with Dallas and Baltimore scheduled to meet Sunday at Maracanã.

Why it matters: Field conditions shape availability and game quality, especially for an international regular-season game with travel demands. Union scrutiny puts pregame preparation and league response in focus before kickoff.

What to watch: Watch for league or stadium updates on surface readiness and any pregame adjustments before Sunday.