Escacena Montero/Martínez Fortún look like the more structured Spanish-style pair, likely aiming to win through control, volume and disciplined net occupation. Acuña López/Uriarte Medina should bring more volatility and power-based point-ending options, but may leak errors if forced into long, low-paced rallies. In Shanghai’s typically faster indoor-type conditions, the match swings on who establishes the net first; slight edge to Escacena/Martínez for consistency under pressure.