Fernandez/Sánchez–Araujo project as the more stable P2 pairing: higher tempo in transitions, better net occupancy, and cleaner first-volley patterns under pressure. Eugenio/Fassio can compete if they slow rallies and force extended defensive sequences, but Brussels indoor conditions usually reward proactive net control. Prediction: Fernandez/Sánchez–Araujo in 2 sets, with a tighter second if Eugenio/Fassio win the serve/return battle early.