Marchetti/Arruabarrena look like the steadier, more structured pair for a Silver draw: expect higher control in the mid-court and fewer cheap errors in long exchanges. Valenzuela/Godallier can swing the match if they win the net early and keep points short, but they’re more exposed if forced into repeated bandeja/víbora sequences under pressure. Slight edge to Marchetti/Arruabarrena in a tactical, patience-heavy match, especially if conditions reward defense and transitions.