Fernandez/Araujo project as the more stable, higher-ceiling pair: Araujo’s weight of shot and net presence should let Claudia play faster, earlier volleys and create sustained pressure. Castello/Rufo can compete by speeding rallies up and attacking second volleys, but they’re likely to face longer stretches defending deep corners under heavy bandejas/viboras. In Brussels’ typically controlled indoor P2 conditions, I lean Fernandez/Araujo to win by owning the net and limiting errors in extended exchanges.