Ruiz/Rubio bring the cleaner top-level structure and heavier tempo control typical of established Spanish pairings, which usually translates well in FIP Silver conditions where patience and error management decide sets. Santigosa/Sintes can make this tight if they disrupt rhythm early and turn it into quick, scrappy exchanges, but over three sets the higher ceiling in transition and finishing should favor Ruiz/Rubio. Prediction: Ruiz/Rubio win, likely in two competitive sets.