Sanyo Gutiérrez/Gonzalo Alfonso arrive in Marseille with a clear uptick in form across late Jan–early Feb 2026, showing better hold% on serve games and cleaner transition to net, while Sager/Rubini have been more volatile—capable of bursts but prone to unforced-error spikes under sustained pressure. No meaningful H2H between these exact pairs has been recorded in the last 3 months, so matchup dynamics and current physical freshness (Sanyo managed recently with reduced load, both teams reported fit) are the key read.