Castelló/Rufo should enter as the more established, higher-tempo pair, with clearer roles and better control in long rally phases typical of indoor P2 conditions in Gijón. Cánovas/Rodríguez Abajo can compete if they win the first-hit exchanges and avoid getting pinned in the backhand corner, but they’ll need very clean side management and lob quality. Prediction: Castelló/Rufo in 2, with a tighter second set if Cánovas/Rodríguez sustain net time.