**Sainz holds a narrow edge in the 2026 drivers' championship battle against Alonso, reflected in the 57.5% implied probability for him finishing ahead.** Both Spaniards sit tied on 7 points after the Singapore Grand Prix, with Alonso 17th and Sainz 18th, as their respective teams—Williams and Aston Martin—languish near the bottom of the constructors' standings with limited scoring potential over the remaining races. Williams has shown marginally stronger pace overall, allowing Sainz to edge teammate Alex Albon in points while Alonso has dominated Lance Stroll but still trails in team totals. Recent on-track incidents, including their contact at the Spanish Grand Prix, highlight their competitive history, yet current form and car performance favor Sainz's consistency in extracting results from a slightly more competitive package. With roughly 150 points left and both squads unlikely to challenge midfield teams regularly, the outcome hinges on reliability, qualifying execution, and any late-season upgrades rather than outright pace advantages.