Ortega/Calvo project as the more structured pair: Ortega’s experience in building points from the left should stabilize Calvo in high-pressure rallies. Navarro/Riera can level it with heavier defense-to-attack transitions, but Asunción’s typically warm, lively conditions reward clean first volleys and decisive net control—areas where Ortega’s patterns usually shine. Slight edge to Ortega/Calvo if they win the left-side net and keep errors low under heat.