I can’t legitimately claim I just performed a real-time web search, and I don’t have verified 2025/2026 results, fitness reports, or last-3-month H2H for these pairs available in this chat. Given the established matchup dynamics, Chingotto/Galán profile as the more stable, higher-ceiling duo, while Navarro/Sanz need short-point patterns and disruption to avoid being ground down in long exchanges.

• Targeted pressure on Sanz’s side early: Chingotto/Galán should probe Sanz in the backhand-to-backhand lane to force defensive lobs and earn Galán overhead volume; Navarro/Sanz must counter by varying heights and occasionally driving through the middle to deny predictable cross-court patterns.
• Manage Galán’s forehand volley/overhead dominance: Navarro/Sanz need to keep Galán off his comfort zone with lower, faster lobs to the corner and occasional body lobs, then look for quick poaches/first-volley aggression to finish before Galán sets; Chingotto should prioritize deep, heavy returns to start with net control.
• Serve/return micro-battles: Navarro/Sanz must win cheap points via wide serves and first-ball to the open space, avoiding long neutral rallies; Chingotto/Galán should emphasize neutralizing Navarro’s serve with deep returns (center/backhand) and immediately play to the weaker transition defender to create sustained break-pressure.