This matchup hinges on whether Bautista/Campagnolo can impose structure and experience against the more volatile, momentum-based threat of Valenzuela/Martinez. In Miami’s typically quicker indoor/controlled conditions, the pair that wins the backhand-side exchanges and protects serve under heat-pressure should dictate the scoreline. Slight edge to Bautista/Campagnolo if they keep rallies long and avoid gifting early-break momentum.