Triay/Brea arrive as the higher-ceiling, more stable pairing: Triay’s left-side control and defending-to-attack transitions complement Brea’s speed and counterpunching. Castello/Rufo can compete if they speed up points and win first-volley exchanges, but over three sets the favorites should generate more break chances through superior lob quality and overhead selection. In Cancún’s typically warm, slightly quicker conditions, expect Triay/Brea to impose with heavier bandejas/víboras and steadier side-to-side pressure.