Federico Cina defeated Francisco Comesana 7-6 7-6 in the first round of the Miami Masters on hard court, pulling off an upset against the pre-match favourite. Comesana entered as the odds-on favourite at 1.40, with Cina at 3.15, yet the Italian secured both sets via tiebreak to advance. The tight scorelines underscore a closely contested match in which neither player could establish decisive separation, with the outcome hinging on clutch moments in the decisive tiebreaks. Cina's ability to convert opportunities in both tiebreak situations proved the decisive factor, suggesting he may carry momentum into his second-round encounter.